CVE-2022-49891 (GCVE-0-2022-49891)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2025-10-01 16:02
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd() test_gen_kprobe_cmd() only free buf in fail path, hence buf will leak when there is no failure. Move kfree(buf) from fail path to common path to prevent the memleak. The same reason and solution in test_gen_kretprobe_cmd(). unreferenced object 0xffff888143b14000 (size 2048): comm "insmod", pid 52490, jiffies 4301890980 (age 40.553s) hex dump (first 32 bytes): 70 3a 6b 70 72 6f 62 65 73 2f 67 65 6e 5f 6b 70 p:kprobes/gen_kp 72 6f 62 65 5f 74 65 73 74 20 64 6f 5f 73 79 73 robe_test do_sys backtrace: [<000000006d7b836b>] kmalloc_trace+0x27/0xa0 [<0000000009528b5b>] 0xffffffffa059006f [<000000008408b580>] do_one_initcall+0x87/0x2a0 [<00000000c4980a7e>] do_init_module+0xdf/0x320 [<00000000d775aad0>] load_module+0x3006/0x3390 [<00000000e9a74b80>] __do_sys_finit_module+0x113/0x1b0 [<000000003726480d>] do_syscall_64+0x35/0x80 [<000000003441e93b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < bef08acbe560a926b4cee9cc46404cc98ae5703b (git)
Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < d1b6a8e3414aeaa0985139180c145d2d0fbd2a49 (git)
Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < 71aeb8d01a8c7ab5cf7da3f81b35206f56ce6bca (git)
Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < 66f0919c953ef7b55e5ab94389a013da2ce80a2c (git)
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    Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.154 , ≤ 5.10.* (semver)
Unaffected: 5.15.78 , ≤ 5.15.* (semver)
Unaffected: 6.0.8 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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The same reason and solution in\\ntest_gen_kretprobe_cmd().\\n\\nunreferenced object 0xffff888143b14000 (size 2048):\\n  comm \\\"insmod\\\", pid 52490, jiffies 4301890980 (age 40.553s)\\n  hex dump (first 32 bytes):\\n    70 3a 6b 70 72 6f 62 65 73 2f 67 65 6e 5f 6b 70  p:kprobes/gen_kp\\n    72 6f 62 65 5f 74 65 73 74 20 64 6f 5f 73 79 73  robe_test do_sys\\n  backtrace:\\n    [\u003c000000006d7b836b\u003e] kmalloc_trace+0x27/0xa0\\n    [\u003c0000000009528b5b\u003e] 0xffffffffa059006f\\n    [\u003c000000008408b580\u003e] do_one_initcall+0x87/0x2a0\\n    [\u003c00000000c4980a7e\u003e] do_init_module+0xdf/0x320\\n    [\u003c00000000d775aad0\u003e] load_module+0x3006/0x3390\\n    [\u003c00000000e9a74b80\u003e] __do_sys_finit_module+0x113/0x1b0\\n    [\u003c000000003726480d\u003e] do_syscall_64+0x35/0x80\\n    [\u003c000000003441e93b\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rastreo: kprobe: Se corrige la fuga de memoria en test_gen_kprobe/kretprobe_cmd(). test_gen_kprobe_cmd() solo libera b\u00fafer en la ruta de fallo, por lo que el b\u00fafer se filtrar\u00e1 cuando no haya fallo. 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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49891\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T16:02:33.186750Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T14:23:26.395Z\"}}], \"cna\": {\"title\": \"tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"64836248dda20c8e7427b493f7e06d9bf8f58850\", \"lessThan\": \"bef08acbe560a926b4cee9cc46404cc98ae5703b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"64836248dda20c8e7427b493f7e06d9bf8f58850\", \"lessThan\": \"d1b6a8e3414aeaa0985139180c145d2d0fbd2a49\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"64836248dda20c8e7427b493f7e06d9bf8f58850\", \"lessThan\": \"71aeb8d01a8c7ab5cf7da3f81b35206f56ce6bca\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"64836248dda20c8e7427b493f7e06d9bf8f58850\", \"lessThan\": \"66f0919c953ef7b55e5ab94389a013da2ce80a2c\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/trace/kprobe_event_gen_test.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.154\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.78\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/trace/kprobe_event_gen_test.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/bef08acbe560a926b4cee9cc46404cc98ae5703b\"}, {\"url\": \"https://git.kernel.org/stable/c/d1b6a8e3414aeaa0985139180c145d2d0fbd2a49\"}, {\"url\": \"https://git.kernel.org/stable/c/71aeb8d01a8c7ab5cf7da3f81b35206f56ce6bca\"}, {\"url\": \"https://git.kernel.org/stable/c/66f0919c953ef7b55e5ab94389a013da2ce80a2c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()\\n\\ntest_gen_kprobe_cmd() only free buf in fail path, hence buf will leak\\nwhen there is no failure. Move kfree(buf) from fail path to common path\\nto prevent the memleak. The same reason and solution in\\ntest_gen_kretprobe_cmd().\\n\\nunreferenced object 0xffff888143b14000 (size 2048):\\n  comm \\\"insmod\\\", pid 52490, jiffies 4301890980 (age 40.553s)\\n  hex dump (first 32 bytes):\\n    70 3a 6b 70 72 6f 62 65 73 2f 67 65 6e 5f 6b 70  p:kprobes/gen_kp\\n    72 6f 62 65 5f 74 65 73 74 20 64 6f 5f 73 79 73  robe_test do_sys\\n  backtrace:\\n    [\u003c000000006d7b836b\u003e] kmalloc_trace+0x27/0xa0\\n    [\u003c0000000009528b5b\u003e] 0xffffffffa059006f\\n    [\u003c000000008408b580\u003e] do_one_initcall+0x87/0x2a0\\n    [\u003c00000000c4980a7e\u003e] do_init_module+0xdf/0x320\\n    [\u003c00000000d775aad0\u003e] load_module+0x3006/0x3390\\n    [\u003c00000000e9a74b80\u003e] __do_sys_finit_module+0x113/0x1b0\\n    [\u003c000000003726480d\u003e] do_syscall_64+0x35/0x80\\n    [\u003c000000003441e93b\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.154\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.78\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.8\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1\", \"versionStartIncluding\": \"5.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:47:54.692Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49891\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T16:02:35.722Z\", \"dateReserved\": \"2025-05-01T14:05:17.243Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-05-01T14:10:35.115Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.