CVE-2023-7192 (GCVE-0-2023-7192)
Vulnerability from cvelistv5
Published
2024-01-02 19:02
Modified
2025-08-03 05:37
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow.
References
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:0723
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:0725
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:1188
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:1250
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:1306
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:1367
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:1382
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:1404
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:2006
secalert@redhat.com https://access.redhat.com/errata/RHSA-2024:2008
secalert@redhat.com https://access.redhat.com/security/cve/CVE-2023-7192 Third Party Advisory
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2256279 Issue Tracking, Patch
secalert@redhat.com https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=ac4893980bbe79ce383daf9a0885666a30fe4c83 Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:0723
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:0725
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:1188
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:1250
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:1306
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:1367
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:1382
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:1404
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:2006
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2024:2008
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/security/cve/CVE-2023-7192 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=2256279 Issue Tracking, Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=ac4893980bbe79ce383daf9a0885666a30fe4c83 Mailing List, Patch
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support Unaffected: 0:4.18.0-193.133.1.el8_2   < *
    cpe:/o:redhat:rhel_e4s:8.2::baseos
    cpe:/o:redhat:rhel_tus:8.2::baseos
    cpe:/o:redhat:rhel_aus:8.2::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service Unaffected: 0:4.18.0-193.133.1.rt13.184.el8_2   < *
    cpe:/a:redhat:rhel_tus:8.2::nfv
    cpe:/a:redhat:rhel_tus:8.2::realtime
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service Unaffected: 0:4.18.0-193.133.1.el8_2   < *
    cpe:/o:redhat:rhel_e4s:8.2::baseos
    cpe:/o:redhat:rhel_tus:8.2::baseos
    cpe:/o:redhat:rhel_aus:8.2::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Unaffected: 0:4.18.0-193.133.1.el8_2   < *
    cpe:/o:redhat:rhel_e4s:8.2::baseos
    cpe:/o:redhat:rhel_tus:8.2::baseos
    cpe:/o:redhat:rhel_aus:8.2::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:4.18.0-305.125.1.el8_4   < *
    cpe:/o:redhat:rhel_e4s:8.4::baseos
    cpe:/o:redhat:rhel_aus:8.4::baseos
    cpe:/o:redhat:rhel_tus:8.4::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service Unaffected: 0:4.18.0-305.125.1.rt7.201.el8_4   < *
    cpe:/a:redhat:rhel_tus:8.4::realtime
    cpe:/a:redhat:rhel_tus:8.4::nfv
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service Unaffected: 0:4.18.0-305.125.1.el8_4   < *
    cpe:/o:redhat:rhel_e4s:8.4::baseos
    cpe:/o:redhat:rhel_aus:8.4::baseos
    cpe:/o:redhat:rhel_tus:8.4::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Unaffected: 0:4.18.0-305.125.1.el8_4   < *
    cpe:/o:redhat:rhel_e4s:8.4::baseos
    cpe:/o:redhat:rhel_aus:8.4::baseos
    cpe:/o:redhat:rhel_tus:8.4::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Unaffected: 0:4.18.0-372.95.1.el8_6   < *
    cpe:/o:redhat:rhev_hypervisor:4.4::el8
    cpe:/o:redhat:rhel_eus:8.6::baseos
    cpe:/a:redhat:rhel_eus:8.6::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support Unaffected: 0:4.18.0-477.51.1.el8_8   < *
    cpe:/o:redhat:rhel_eus:8.8::baseos
    cpe:/a:redhat:rhel_eus:8.8::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support Unaffected: 0:5.14.0-70.93.2.el9_0   < *
    cpe:/a:redhat:rhel_eus:9.0::crb
    cpe:/a:redhat:rhel_eus:9.0::appstream
    cpe:/o:redhat:rhel_eus:9.0::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support Unaffected: 0:5.14.0-70.93.1.rt21.165.el9_0   < *
    cpe:/a:redhat:rhel_eus:9.0::realtime
    cpe:/a:redhat:rhel_eus:9.0::nfv
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support Unaffected: 0:5.14.0-284.52.1.el9_2   < *
    cpe:/a:redhat:rhel_eus:9.2::crb
    cpe:/a:redhat:rhel_eus:9.2::appstream
    cpe:/o:redhat:rhel_eus:9.2::baseos
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support Unaffected: 0:5.14.0-284.52.1.rt14.337.el9_2   < *
    cpe:/a:redhat:rhel_eus:9.2::nfv
    cpe:/a:redhat:rhel_eus:9.2::realtime
Create a notification for this product.
   Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Unaffected: 0:4.18.0-372.95.1.el8_6   < *
    cpe:/o:redhat:rhev_hypervisor:4.4::el8
    cpe:/o:redhat:rhel_eus:8.6::baseos
    cpe:/a:redhat:rhel_eus:8.6::crb
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Show details on NVD website


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\"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:8\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8\", \"packageName\": \"kernel\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:8\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 8\", \"packageName\": \"kernel-rt\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9\", \"packageName\": \"kernel\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9\", \"packageName\": \"kernel-rt\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2023-09-13T00:00:00+00:00\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2023-02-10T00:00:00+00:00\", \"value\": \"Made public.\"}], \"datePublic\": \"2023-02-10T00:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2024:0723\", \"name\": \"RHSA-2024:0723\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:0725\", \"name\": \"RHSA-2024:0725\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:1188\", \"name\": \"RHSA-2024:1188\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:1250\", \"name\": \"RHSA-2024:1250\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:1306\", \"name\": \"RHSA-2024:1306\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:1367\", \"name\": \"RHSA-2024:1367\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:1382\", \"name\": \"RHSA-2024:1382\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:1404\", \"name\": \"RHSA-2024:1404\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:2006\", \"name\": \"RHSA-2024:2006\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2024:2008\", \"name\": \"RHSA-2024:2008\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2023-7192\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2256279\", \"name\": \"RHBZ#2256279\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=ac4893980bbe79ce383daf9a0885666a30fe4c83\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Triggering this issue requires the ability to create user/net namespaces.\\n\\nOn non-containerized deployments of Red Hat Enterprise Linux 8, you can disable user namespaces by setting user.max_user_namespaces to 0:\\n\\n# echo \\\"user.max_user_namespaces=0\\\" \u003e /etc/sysctl.d/userns.conf\\n# sysctl -p /etc/sysctl.d/userns.conf\\n\\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.\\n\\nAlternatively, skip loading the affected netfilter module (i.e., nf_conntrack_netlink) onto the system until we have a fix available. This can be done by a blacklist mechanism which will ensure the driver is not loaded at boot time.\\n~~~\\nHow do I blacklist a kernel module to prevent it from loading automatically?\\nhttps://access.redhat.com/solutions/41278 \\n~~~\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2025-08-03T05:37:39.783Z\"}, \"x_redhatCweChain\": \"CWE-401: Missing Release of Memory after Effective Lifetime\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-7192\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-08-03T05:37:39.783Z\", \"dateReserved\": \"2023-12-30T18:12:05.167Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2024-01-02T19:02:45.371Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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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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