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wid-sec-w-2022-0154
Vulnerability from csaf_certbund
Published
2022-03-10 23:00
Modified
2025-05-12 22:00
Summary
Xen: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung
Xen ist ein Virtueller-Maschinen-Monitor (VMM), der Hardware (x86, IA-64, PowerPC) für die darauf laufenden Systeme (Domains) paravirtualisiert.
Angriff
Ein lokaler Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herbeizuführen.
Betroffene Betriebssysteme
- Linux
{ "document": { "aggregate_severity": { "text": "mittel" }, "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "de-DE", "notes": [ { "category": "legal_disclaimer", "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen." }, { "category": "description", "text": "Xen ist ein Virtueller-Maschinen-Monitor (VMM), der Hardware (x86, IA-64, PowerPC) f\u00fcr die darauf laufenden Systeme (Domains) paravirtualisiert.", "title": "Produktbeschreibung" }, { "category": "summary", "text": "Ein lokaler Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herbeizuf\u00fchren.", "title": "Angriff" }, { "category": "general", "text": "- Linux", "title": "Betroffene Betriebssysteme" } ], "publisher": { "category": "other", "contact_details": "csaf-provider@cert-bund.de", "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik", "namespace": "https://www.bsi.bund.de" }, "references": [ { "category": "self", "summary": "WID-SEC-W-2022-0154 - CSAF Version", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0154.json" }, { "category": "self", "summary": "WID-SEC-2022-0154 - Portal Version", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0154" }, { "category": "external", "summary": "Xen Security Advisory vom 2022-03-10", "url": "https://xenbits.xen.org/xsa/advisory-396.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1163-1 vom 2022-04-12", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010687.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1196-1 vom 2022-04-14", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010723.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1197-1 vom 2022-04-14", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010731.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1255-1 vom 2022-04-19", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010749.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1267-1 vom 2022-04-19", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010755.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1266-1 vom 2022-04-19", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010754.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1257-1 vom 2022-04-19", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010746.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1256-1 vom 2022-04-19", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010751.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1270-1 vom 2022-04-20", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010768.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1283-1 vom 2022-04-20", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010777.html" }, { "category": "external", "summary": "SUSE Security Update SUSE-SU-2022:1402-1 vom 2022-04-26", "url": "https://lists.suse.com/pipermail/sle-security-updates/2022-April/010835.html" }, { "category": "external", "summary": "Ubuntu Security Notice USN-5418-1 vom 2022-05-12", "url": "https://ubuntu.com/security/notices/USN-5418-1" }, { "category": "external", "summary": "Ubuntu Security Notice USN-5467-1 vom 2022-06-08", "url": "https://ubuntu.com/security/notices/USN-5467-1" }, { "category": "external", "summary": "Oracle Linux Security Advisory ELSA-2022-9479 vom 2022-06-15", "url": "http://linux.oracle.com/errata/ELSA-2022-9479.html" }, { "category": "external", "summary": "Oracle Linux Security Advisory ELSA-2022-9480 vom 2022-06-15", "url": "http://linux.oracle.com/errata/ELSA-2022-9480.html" }, { "category": "external", "summary": "Oracle Linux Security Advisory ELSA-2022-9477 vom 2022-06-15", "url": "http://linux.oracle.com/errata/ELSA-2022-9477.html" }, { "category": "external", "summary": "Debian Security Advisory DLA-3065 vom 2022-07-01", "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" }, { "category": "external", "summary": "Oracle Linux Security Advisory ELSA-2022-9999 vom 2022-11-16", "url": "http://linux.oracle.com/errata/ELSA-2022-9999.html" }, { "category": "external", "summary": "Ubuntu Security Notice USN-7428-2 vom 2025-04-09", "url": "https://ubuntu.com/security/notices/USN-7428-2" }, { "category": "external", "summary": "Ubuntu Security Notice USN-7428-1 vom 2025-04-09", "url": "https://ubuntu.com/security/notices/USN-7428-1" }, { "category": "external", "summary": "Ubuntu Security Notice USN-7506-2 vom 2025-05-12", "url": "https://ubuntu.com/security/notices/USN-7506-2" }, { "category": "external", "summary": "Ubuntu Security Notice USN-7506-3 vom 2025-05-12", "url": "https://ubuntu.com/security/notices/USN-7506-3" }, { "category": "external", "summary": "Ubuntu Security Notice USN-7506-1 vom 2025-05-12", "url": "https://ubuntu.com/security/notices/USN-7506-1" } ], "source_lang": "en-US", "title": "Xen: Mehrere Schwachstellen erm\u00f6glichen Umgehen von Sicherheitsvorkehrungen", "tracking": { "current_release_date": "2025-05-12T22:00:00.000+00:00", "generator": { "date": "2025-05-13T07:15:59.222+00:00", "engine": { "name": "BSI-WID", "version": "1.3.12" } }, "id": "WID-SEC-W-2022-0154", "initial_release_date": "2022-03-10T23:00:00.000+00:00", "revision_history": [ { "date": "2022-03-10T23:00:00.000+00:00", "number": "1", "summary": "Initiale Fassung" }, { "date": "2022-04-12T22:00:00.000+00:00", "number": "2", "summary": "Neue Updates von SUSE aufgenommen" }, { "date": "2022-04-13T22:00:00.000+00:00", "number": "3", "summary": "Neue Updates von SUSE aufgenommen" }, { "date": "2022-04-18T22:00:00.000+00:00", "number": "4", "summary": "Neue Updates von SUSE aufgenommen" }, { "date": "2022-04-19T22:00:00.000+00:00", "number": "5", "summary": "Neue Updates von SUSE aufgenommen" }, { "date": "2022-04-20T22:00:00.000+00:00", "number": "6", "summary": "Neue Updates von SUSE aufgenommen" }, { "date": "2022-04-26T22:00:00.000+00:00", "number": "7", "summary": "Neue Updates von SUSE aufgenommen" }, { "date": "2022-05-11T22:00:00.000+00:00", "number": "8", "summary": "Neue Updates von Ubuntu aufgenommen" }, { "date": "2022-06-07T22:00:00.000+00:00", "number": "9", "summary": "Neue Updates von Ubuntu aufgenommen" }, { "date": "2022-06-16T22:00:00.000+00:00", "number": "10", "summary": "Neue Updates von Oracle Linux aufgenommen" }, { "date": "2022-07-03T22:00:00.000+00:00", "number": "11", "summary": "Neue Updates von Debian aufgenommen" }, { "date": "2022-11-16T23:00:00.000+00:00", "number": "12", "summary": "Neue Updates von Oracle Linux aufgenommen" }, { "date": "2025-04-09T22:00:00.000+00:00", "number": "13", "summary": "Neue Updates von Ubuntu aufgenommen" }, { "date": "2025-05-12T22:00:00.000+00:00", "number": "14", "summary": "Neue Updates von Ubuntu aufgenommen" } ], "status": "final", "version": "14" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_name", "name": "Debian Linux", "product": { "name": "Debian Linux", "product_id": "2951", "product_identification_helper": { "cpe": "cpe:/o:debian:debian_linux:-" } } } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "Linux PV", "product": { "name": "Open Source Xen Linux PV", "product_id": "T022319", "product_identification_helper": { "cpe": "cpe:/o:xen:xen:linux_pv" } } } ], "category": "product_name", "name": "Xen" } ], "category": "vendor", "name": "Open Source" }, { "branches": [ { "category": "product_name", "name": "Oracle Linux", "product": { "name": "Oracle Linux", "product_id": "T004914", "product_identification_helper": { "cpe": "cpe:/o:oracle:linux:-" } } } ], "category": "vendor", "name": "Oracle" }, { "branches": [ { "category": "product_name", "name": "SUSE Linux", "product": { "name": "SUSE Linux", "product_id": "T002207", "product_identification_helper": { "cpe": "cpe:/o:suse:suse_linux:-" } } } ], "category": "vendor", "name": "SUSE" }, { "branches": [ { "category": "product_name", "name": "Ubuntu Linux", "product": { "name": "Ubuntu Linux", "product_id": "T000126", "product_identification_helper": { "cpe": "cpe:/o:canonical:ubuntu_linux:-" } } } ], "category": "vendor", "name": "Ubuntu" } ] }, "vulnerabilities": [ { "cve": "CVE-2022-23036", "product_status": { "known_affected": [ "T022319", "2951", "T002207", "T000126", "T004914" ] }, "release_date": "2022-03-10T23:00:00.000+00:00", "title": "CVE-2022-23036" }, { "cve": "CVE-2022-23037", "product_status": { "known_affected": [ "T022319", "2951", "T002207", "T000126", "T004914" ] }, "release_date": "2022-03-10T23:00:00.000+00:00", "title": "CVE-2022-23037" }, { "cve": "CVE-2022-23038", "product_status": { "known_affected": [ "T022319", "2951", "T002207", "T000126", "T004914" ] }, "release_date": "2022-03-10T23:00:00.000+00:00", "title": "CVE-2022-23038" }, { "cve": "CVE-2022-23039", "product_status": { "known_affected": [ "T022319", "2951", "T002207", "T000126", "T004914" ] }, "release_date": "2022-03-10T23:00:00.000+00:00", "title": "CVE-2022-23039" }, { "cve": "CVE-2022-23040", "product_status": { "known_affected": [ "T022319", "2951", "T002207", "T000126", "T004914" ] }, "release_date": "2022-03-10T23:00:00.000+00:00", "title": "CVE-2022-23040" }, { "cve": "CVE-2022-23041", "product_status": { "known_affected": [ "T022319", "2951", "T002207", "T000126", "T004914" ] }, "release_date": "2022-03-10T23:00:00.000+00:00", "title": "CVE-2022-23041" }, { "cve": "CVE-2022-23042", "product_status": { "known_affected": [ "T022319", "2951", "T002207", "T000126", "T004914" ] }, "release_date": "2022-03-10T23:00:00.000+00:00", "title": "CVE-2022-23042" } ] }
CVE-2022-23041 (GCVE-0-2022-23041)
Vulnerability from cvelistv5
Published
2022-03-10 19:20
Modified
2024-08-03 03:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
unspecified | unspecified |
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-03T03:28:42.964Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "tags": [ "mailing-list", "x_refsource_MLIST", "x_transferred" ], "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "product": "unspecified", "vendor": "unspecified", "versions": [ { "status": "unknown", "version": "consult Xen advisory XSA-396" } ] } ], "credits": [ { "lang": "en", "value": "{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027This issue was discovered by Demi Marie Obenour and Simon Gaiser of\\nInvisible Things Lab.\u0027}]}}}" } ], "descriptions": [ { "lang": "en", "value": "Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042" } ], "metrics": [ { "other": { "content": { "description": { "description_data": [ { "lang": "eng", "value": "Due to race conditions and missing tests of return codes in the Linux\nPV device frontend drivers a malicious backend could gain access (read\nand write) to memory pages it shouldn\u0027t have, or it could directly\ntrigger Denial of Service (DoS) in the guest." } ] } }, "type": "unknown" } } ], "problemTypes": [ { "descriptions": [ { "description": "unknown", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2022-07-01T13:06:34", "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@xen.org", "ID": "CVE-2022-23041", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "", "version": { "version_data": [ { "version_affected": "?", "version_value": "consult Xen advisory XSA-396" } ] } } ] }, "vendor_name": "" } ] } }, "configuration": { "configuration_data": { "description": { "description_data": [ { "lang": "eng", "value": "All Linux guests using PV devices are vulnerable in case potentially\nmalicious PV device backends are being used." } ] } } }, "credit": { "credit_data": { "description": { "description_data": [ { "lang": "eng", "value": "This issue was discovered by Demi Marie Obenour and Simon Gaiser of\nInvisible Things Lab." } ] } } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042" } ] }, "impact": { "impact_data": { "description": { "description_data": [ { "lang": "eng", "value": "Due to race conditions and missing tests of return codes in the Linux\nPV device frontend drivers a malicious backend could gain access (read\nand write) to memory pages it shouldn\u0027t have, or it could directly\ntrigger Denial of Service (DoS) in the guest." } ] } } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "unknown" } ] } ] }, "references": { "reference_data": [ { "name": "https://xenbits.xenproject.org/xsa/advisory-396.txt", "refsource": "MISC", "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ] }, "workaround": { "workaround_data": { "description": { "description_data": [ { "lang": "eng", "value": "There is no mitigation available other than not using PV devices in case\na backend is suspected to be potentially malicious." } ] } } } } } }, "cveMetadata": { "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "assignerShortName": "XEN", "cveId": "CVE-2022-23041", "datePublished": "2022-03-10T19:20:22", "dateReserved": "2022-01-10T00:00:00", "dateUpdated": "2024-08-03T03:28:42.964Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
CVE-2022-23038 (GCVE-0-2022-23038)
Vulnerability from cvelistv5
Published
2022-03-10 19:20
Modified
2024-08-03 03:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
unspecified | unspecified |
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CVE-2022-23037 (GCVE-0-2022-23037)
Vulnerability from cvelistv5
Published
2022-03-10 19:20
Modified
2024-08-03 03:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
unspecified | unspecified |
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CVE-2022-23039 (GCVE-0-2022-23039)
Vulnerability from cvelistv5
Published
2022-03-10 19:20
Modified
2024-08-03 03:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
unspecified | unspecified |
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If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. 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CVE-2022-23042" } ] }, "impact": { "impact_data": { "description": { "description_data": [ { "lang": "eng", "value": "Due to race conditions and missing tests of return codes in the Linux\nPV device frontend drivers a malicious backend could gain access (read\nand write) to memory pages it shouldn\u0027t have, or it could directly\ntrigger Denial of Service (DoS) in the guest." } ] } } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "unknown" } ] } ] }, "references": { "reference_data": [ { "name": "https://xenbits.xenproject.org/xsa/advisory-396.txt", "refsource": "MISC", "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ] }, "workaround": { "workaround_data": { "description": { "description_data": [ { "lang": "eng", "value": "There is no mitigation available other than not using PV devices in case\na backend is suspected to be potentially malicious." } ] } } } } } }, "cveMetadata": { "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "assignerShortName": "XEN", "cveId": "CVE-2022-23039", "datePublished": "2022-03-10T19:20:19", "dateReserved": "2022-01-10T00:00:00", "dateUpdated": "2024-08-03T03:28:42.973Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
CVE-2022-23040 (GCVE-0-2022-23040)
Vulnerability from cvelistv5
Published
2022-03-10 19:20
Modified
2024-08-03 03:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
unspecified | unspecified |
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If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. 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If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. 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CVE-2022-23042 (GCVE-0-2022-23042)
Vulnerability from cvelistv5
Published
2022-03-10 19:20
Modified
2024-08-03 03:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
unspecified | unspecified |
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As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042" } ], "metrics": [ { "other": { "content": { "description": { "description_data": [ { "lang": "eng", "value": "Due to race conditions and missing tests of return codes in the Linux\nPV device frontend drivers a malicious backend could gain access (read\nand write) to memory pages it shouldn\u0027t have, or it could directly\ntrigger Denial of Service (DoS) in the guest." } ] } }, "type": "unknown" } } ], "problemTypes": [ { "descriptions": [ { "description": "unknown", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2022-07-01T13:06:43", "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@xen.org", "ID": "CVE-2022-23042", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "", "version": { "version_data": [ { "version_affected": "?", "version_value": "consult Xen advisory XSA-396" } ] } } ] }, "vendor_name": "" } ] } }, "configuration": { "configuration_data": { "description": { "description_data": [ { "lang": "eng", "value": "All Linux guests using PV devices are vulnerable in case potentially\nmalicious PV device backends are being used." } ] } } }, "credit": { "credit_data": { "description": { "description_data": [ { "lang": "eng", "value": "This issue was discovered by Demi Marie Obenour and Simon Gaiser of\nInvisible Things Lab." } ] } } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. 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CVE-2022-23042" } ] }, "impact": { "impact_data": { "description": { "description_data": [ { "lang": "eng", "value": "Due to race conditions and missing tests of return codes in the Linux\nPV device frontend drivers a malicious backend could gain access (read\nand write) to memory pages it shouldn\u0027t have, or it could directly\ntrigger Denial of Service (DoS) in the guest." } ] } } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "unknown" } ] } ] }, "references": { "reference_data": [ { "name": "https://xenbits.xenproject.org/xsa/advisory-396.txt", "refsource": "MISC", "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ] }, "workaround": { "workaround_data": { "description": { "description_data": [ { "lang": "eng", "value": "There is no mitigation available other than not using PV devices in case\na backend is suspected to be potentially malicious." } ] } } } } } }, "cveMetadata": { "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "assignerShortName": "XEN", "cveId": "CVE-2022-23042", "datePublished": "2022-03-10T19:20:24", "dateReserved": "2022-01-10T00:00:00", "dateUpdated": "2024-08-03T03:28:42.974Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
CVE-2022-23036 (GCVE-0-2022-23036)
Vulnerability from cvelistv5
Published
2022-03-10 19:20
Modified
2024-08-03 03:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- unknown
Summary
Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042
References
► | URL | Tags | ||||||
---|---|---|---|---|---|---|---|---|
|
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
unspecified | unspecified |
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-03T03:28:42.946Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "tags": [ "mailing-list", "x_refsource_MLIST", "x_transferred" ], "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "product": "unspecified", "vendor": "unspecified", "versions": [ { "status": "unknown", "version": "consult Xen advisory XSA-396" } ] } ], "credits": [ { "lang": "en", "value": "{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027This issue was discovered by Demi Marie Obenour and Simon Gaiser of\\nInvisible Things Lab.\u0027}]}}}" } ], "descriptions": [ { "lang": "en", "value": "Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042" } ], "metrics": [ { "other": { "content": { "description": { "description_data": [ { "lang": "eng", "value": "Due to race conditions and missing tests of return codes in the Linux\nPV device frontend drivers a malicious backend could gain access (read\nand write) to memory pages it shouldn\u0027t have, or it could directly\ntrigger Denial of Service (DoS) in the guest." } ] } }, "type": "unknown" } } ], "problemTypes": [ { "descriptions": [ { "description": "unknown", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2022-07-01T13:06:57", "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@xen.org", "ID": "CVE-2022-23036", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "", "version": { "version_data": [ { "version_affected": "?", "version_value": "consult Xen advisory XSA-396" } ] } } ] }, "vendor_name": "" } ] } }, "configuration": { "configuration_data": { "description": { "description_data": [ { "lang": "eng", "value": "All Linux guests using PV devices are vulnerable in case potentially\nmalicious PV device backends are being used." } ] } } }, "credit": { "credit_data": { "description": { "description_data": [ { "lang": "eng", "value": "This issue was discovered by Demi Marie Obenour and Simon Gaiser of\nInvisible Things Lab." } ] } } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. As a result the backend can keep access to the memory page of the guest no matter how the page will be used after the frontend I/O has finished. The xenbus driver has a similar problem, as it doesn\u0027t check the success of removing the granted access of a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038 gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no longer in use, but the freeing of the related data page is not synchronized with dropping the granted access. As a result the backend can keep access to the memory page even after it has been freed and then re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which can be triggered by the backend. CVE-2022-23042" } ] }, "impact": { "impact_data": { "description": { "description_data": [ { "lang": "eng", "value": "Due to race conditions and missing tests of return codes in the Linux\nPV device frontend drivers a malicious backend could gain access (read\nand write) to memory pages it shouldn\u0027t have, or it could directly\ntrigger Denial of Service (DoS) in the guest." } ] } } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "unknown" } ] } ] }, "references": { "reference_data": [ { "name": "https://xenbits.xenproject.org/xsa/advisory-396.txt", "refsource": "MISC", "url": "https://xenbits.xenproject.org/xsa/advisory-396.txt" }, { "name": "[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html" } ] }, "workaround": { "workaround_data": { "description": { "description_data": [ { "lang": "eng", "value": "There is no mitigation available other than not using PV devices in case\na backend is suspected to be potentially malicious." } ] } } } } } }, "cveMetadata": { "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "assignerShortName": "XEN", "cveId": "CVE-2022-23036", "datePublished": "2022-03-10T19:20:15", "dateReserved": "2022-01-10T00:00:00", "dateUpdated": "2024-08-03T03:28:42.946Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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