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gsd-2021-47238
Vulnerability from gsd
Modified
2024-04-11 05:05
Details
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
Aliases
{ "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2021-47238" ], "id": "GSD-2021-47238", "modified": "2024-04-11T05:05:09.698901Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-47238", "STATE": "RESERVED" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided." } ] } } } }
CVE-2021-47238 (GCVE-0-2021-47238)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2025-05-07 19:58
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: ipv4: fix memory leak in ip_mc_add1_src
BUG: memory leak
unreferenced object 0xffff888101bc4c00 (size 32):
comm "syz-executor527", pid 360, jiffies 4294807421 (age 19.329s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
01 00 00 00 00 00 00 00 ac 14 14 bb 00 00 02 00 ................
backtrace:
[<00000000f17c5244>] kmalloc include/linux/slab.h:558 [inline]
[<00000000f17c5244>] kzalloc include/linux/slab.h:688 [inline]
[<00000000f17c5244>] ip_mc_add1_src net/ipv4/igmp.c:1971 [inline]
[<00000000f17c5244>] ip_mc_add_src+0x95f/0xdb0 net/ipv4/igmp.c:2095
[<000000001cb99709>] ip_mc_source+0x84c/0xea0 net/ipv4/igmp.c:2416
[<0000000052cf19ed>] do_ip_setsockopt net/ipv4/ip_sockglue.c:1294 [inline]
[<0000000052cf19ed>] ip_setsockopt+0x114b/0x30c0 net/ipv4/ip_sockglue.c:1423
[<00000000477edfbc>] raw_setsockopt+0x13d/0x170 net/ipv4/raw.c:857
[<00000000e75ca9bb>] __sys_setsockopt+0x158/0x270 net/socket.c:2117
[<00000000bdb993a8>] __do_sys_setsockopt net/socket.c:2128 [inline]
[<00000000bdb993a8>] __se_sys_setsockopt net/socket.c:2125 [inline]
[<00000000bdb993a8>] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2125
[<000000006a1ffdbd>] do_syscall_64+0x40/0x80 arch/x86/entry/common.c:47
[<00000000b11467c4>] entry_SYSCALL_64_after_hwframe+0x44/0xae
In commit 24803f38a5c0 ("igmp: do not remove igmp souce list info when set
link down"), the ip_mc_clear_src() in ip_mc_destroy_dev() was removed,
because it was also called in igmpv3_clear_delrec().
Rough callgraph:
inetdev_destroy
-> ip_mc_destroy_dev
-> igmpv3_clear_delrec
-> ip_mc_clear_src
-> RCU_INIT_POINTER(dev->ip_ptr, NULL)
However, ip_mc_clear_src() called in igmpv3_clear_delrec() doesn't
release in_dev->mc_list->sources. And RCU_INIT_POINTER() assigns the
NULL to dev->ip_ptr. As a result, in_dev cannot be obtained through
inetdev_by_index() and then in_dev->mc_list->sources cannot be released
by ip_mc_del1_src() in the sock_close. Rough call sequence goes like:
sock_close
-> __sock_release
-> inet_release
-> ip_mc_drop_socket
-> inetdev_by_index
-> ip_mc_leave_src
-> ip_mc_del_src
-> ip_mc_del1_src
So we still need to call ip_mc_clear_src() in ip_mc_destroy_dev() to free
in_dev->mc_list->sources.
References
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
► | Linux | Linux |
Version: 24803f38a5c0b6c57ed800b47e695f9ce474bc3a Version: 24803f38a5c0b6c57ed800b47e695f9ce474bc3a Version: 24803f38a5c0b6c57ed800b47e695f9ce474bc3a Version: 24803f38a5c0b6c57ed800b47e695f9ce474bc3a Version: 24803f38a5c0b6c57ed800b47e695f9ce474bc3a Version: 24803f38a5c0b6c57ed800b47e695f9ce474bc3a Version: 24803f38a5c0b6c57ed800b47e695f9ce474bc3a Version: bd1b664a19403ede448d29c87b2f23796bc7a577 Version: b38c6e0bd5b5e439ecebdc0df599d573c2f610f8 |
|
{ "containers": { "adp": [ { "affected": [ { "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [ { "lessThan": "0dc13e75507f", "status": "affected", "version": "24803f38a5c0", "versionType": "custom" } ] }, { "cpes": [ "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [ { "lessThan": "6cff57eea334", "status": "affected", "version": "24803f38a5c0", "versionType": "custom" } ] }, { "cpes": [ "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [ { "lessThan": "1e28018b5c83", "status": "affected", "version": "24803f38a5c0", "versionType": "custom" } ] }, { "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [ { "lessThan": 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"linux", "versions": [ { "status": "unaffected", "version": "5.13" } ] } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" } }, { "other": { "content": { "id": "CVE-2021-47238", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2025-05-07T19:57:25.364822Z", "version": "2.0.3" }, "type": "ssvc" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2025-05-07T19:58:16.834Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" }, { "providerMetadata": { "dateUpdated": "2024-08-04T05:32:07.941Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/0dc13e75507faa17ac9f7562b4ef7bf8fcd78422" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/6cff57eea3347f79f1867cc53e1093b6614138d8" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/1e28018b5c83d5073f74a6fb72eabe8370b2f501" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/3dd2aeac2e9624cff9fa634710837e4f2e352758" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/ac31cc837cafb57a271babad8ccffbf733caa076" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/77de6ee73f54a9a89c0afa0bf4c53b239aa9953a" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/d8e2973029b8b2ce477b564824431f3385c77083" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "net/ipv4/igmp.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "0dc13e75507faa17ac9f7562b4ef7bf8fcd78422", "status": "affected", "version": "24803f38a5c0b6c57ed800b47e695f9ce474bc3a", "versionType": "git" }, { "lessThan": "6cff57eea3347f79f1867cc53e1093b6614138d8", "status": "affected", "version": "24803f38a5c0b6c57ed800b47e695f9ce474bc3a", "versionType": "git" }, { "lessThan": "1e28018b5c83d5073f74a6fb72eabe8370b2f501", "status": "affected", "version": "24803f38a5c0b6c57ed800b47e695f9ce474bc3a", "versionType": "git" }, { "lessThan": "3dd2aeac2e9624cff9fa634710837e4f2e352758", "status": "affected", "version": "24803f38a5c0b6c57ed800b47e695f9ce474bc3a", "versionType": "git" }, { "lessThan": "ac31cc837cafb57a271babad8ccffbf733caa076", "status": "affected", "version": "24803f38a5c0b6c57ed800b47e695f9ce474bc3a", "versionType": "git" }, { "lessThan": "77de6ee73f54a9a89c0afa0bf4c53b239aa9953a", "status": "affected", "version": "24803f38a5c0b6c57ed800b47e695f9ce474bc3a", "versionType": "git" }, { "lessThan": "d8e2973029b8b2ce477b564824431f3385c77083", "status": "affected", "version": "24803f38a5c0b6c57ed800b47e695f9ce474bc3a", "versionType": "git" }, { "status": "affected", "version": "bd1b664a19403ede448d29c87b2f23796bc7a577", "versionType": "git" }, { "status": "affected", "version": "b38c6e0bd5b5e439ecebdc0df599d573c2f610f8", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "net/ipv4/igmp.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "4.9" }, { "lessThan": "4.9", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.274", "versionType": "semver" }, { "lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.238", "versionType": "semver" }, { "lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.196", "versionType": "semver" }, { "lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.128", "versionType": "semver" }, { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.46", "versionType": "semver" }, { "lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.13", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.9.274", "versionStartIncluding": "4.9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.14.238", "versionStartIncluding": "4.9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.19.196", "versionStartIncluding": "4.9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.4.128", "versionStartIncluding": "4.9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.46", "versionStartIncluding": "4.9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.12.13", "versionStartIncluding": "4.9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.13", "versionStartIncluding": "4.9", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2.87", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16.42", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ipv4: fix memory leak in ip_mc_add1_src\n\nBUG: memory leak\nunreferenced object 0xffff888101bc4c00 (size 32):\n comm \"syz-executor527\", pid 360, jiffies 4294807421 (age 19.329s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 01 00 00 00 00 00 00 00 ac 14 14 bb 00 00 02 00 ................\n backtrace:\n [\u003c00000000f17c5244\u003e] kmalloc include/linux/slab.h:558 [inline]\n [\u003c00000000f17c5244\u003e] kzalloc include/linux/slab.h:688 [inline]\n [\u003c00000000f17c5244\u003e] ip_mc_add1_src net/ipv4/igmp.c:1971 [inline]\n [\u003c00000000f17c5244\u003e] ip_mc_add_src+0x95f/0xdb0 net/ipv4/igmp.c:2095\n [\u003c000000001cb99709\u003e] ip_mc_source+0x84c/0xea0 net/ipv4/igmp.c:2416\n [\u003c0000000052cf19ed\u003e] do_ip_setsockopt net/ipv4/ip_sockglue.c:1294 [inline]\n [\u003c0000000052cf19ed\u003e] ip_setsockopt+0x114b/0x30c0 net/ipv4/ip_sockglue.c:1423\n [\u003c00000000477edfbc\u003e] raw_setsockopt+0x13d/0x170 net/ipv4/raw.c:857\n [\u003c00000000e75ca9bb\u003e] __sys_setsockopt+0x158/0x270 net/socket.c:2117\n [\u003c00000000bdb993a8\u003e] __do_sys_setsockopt net/socket.c:2128 [inline]\n [\u003c00000000bdb993a8\u003e] __se_sys_setsockopt net/socket.c:2125 [inline]\n [\u003c00000000bdb993a8\u003e] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2125\n [\u003c000000006a1ffdbd\u003e] do_syscall_64+0x40/0x80 arch/x86/entry/common.c:47\n [\u003c00000000b11467c4\u003e] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nIn commit 24803f38a5c0 (\"igmp: do not remove igmp souce list info when set\nlink down\"), the ip_mc_clear_src() in ip_mc_destroy_dev() was removed,\nbecause it was also called in igmpv3_clear_delrec().\n\nRough callgraph:\n\ninetdev_destroy\n-\u003e ip_mc_destroy_dev\n -\u003e igmpv3_clear_delrec\n -\u003e ip_mc_clear_src\n-\u003e RCU_INIT_POINTER(dev-\u003eip_ptr, NULL)\n\nHowever, ip_mc_clear_src() called in igmpv3_clear_delrec() doesn\u0027t\nrelease in_dev-\u003emc_list-\u003esources. And RCU_INIT_POINTER() assigns the\nNULL to dev-\u003eip_ptr. As a result, in_dev cannot be obtained through\ninetdev_by_index() and then in_dev-\u003emc_list-\u003esources cannot be released\nby ip_mc_del1_src() in the sock_close. Rough call sequence goes like:\n\nsock_close\n-\u003e __sock_release\n -\u003e inet_release\n -\u003e ip_mc_drop_socket\n -\u003e inetdev_by_index\n -\u003e ip_mc_leave_src\n -\u003e ip_mc_del_src\n -\u003e ip_mc_del1_src\n\nSo we still need to call ip_mc_clear_src() in ip_mc_destroy_dev() to free\nin_dev-\u003emc_list-\u003esources." } ], "providerMetadata": { "dateUpdated": "2025-05-04T12:41:17.545Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/0dc13e75507faa17ac9f7562b4ef7bf8fcd78422" }, { "url": "https://git.kernel.org/stable/c/6cff57eea3347f79f1867cc53e1093b6614138d8" }, { "url": "https://git.kernel.org/stable/c/1e28018b5c83d5073f74a6fb72eabe8370b2f501" }, { "url": "https://git.kernel.org/stable/c/3dd2aeac2e9624cff9fa634710837e4f2e352758" }, { "url": "https://git.kernel.org/stable/c/ac31cc837cafb57a271babad8ccffbf733caa076" }, { "url": "https://git.kernel.org/stable/c/77de6ee73f54a9a89c0afa0bf4c53b239aa9953a" }, { "url": "https://git.kernel.org/stable/c/d8e2973029b8b2ce477b564824431f3385c77083" } ], "title": "net: ipv4: fix memory leak in ip_mc_add1_src", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2021-47238", "datePublished": "2024-05-21T14:19:39.041Z", "dateReserved": "2024-04-10T18:59:19.532Z", "dateUpdated": "2025-05-07T19:58:16.834Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
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Sightings
Author | Source | Type | Date |
---|
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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