CVE-2023-53375 (GCVE-0-2023-53375)

Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-01-14 19:03
VLAI?
Title
tracing: Free error logs of tracing instances
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Free error logs of tracing instances When a tracing instance is removed, the error messages that hold errors that occurred in the instance needs to be freed. The following reports a memory leak: # cd /sys/kernel/tracing # mkdir instances/foo # echo 'hist:keys=x' > instances/foo/events/sched/sched_switch/trigger # cat instances/foo/error_log [ 117.404795] hist:sched:sched_switch: error: Couldn't find field Command: hist:keys=x ^ # rmdir instances/foo Then check for memory leaks: # echo scan > /sys/kernel/debug/kmemleak # cat /sys/kernel/debug/kmemleak unreferenced object 0xffff88810d8ec700 (size 192): comm "bash", pid 869, jiffies 4294950577 (age 215.752s) hex dump (first 32 bytes): 60 dd 68 61 81 88 ff ff 60 dd 68 61 81 88 ff ff `.ha....`.ha.... a0 30 8c 83 ff ff ff ff 26 00 0a 00 00 00 00 00 .0......&....... backtrace: [<00000000dae26536>] kmalloc_trace+0x2a/0xa0 [<00000000b2938940>] tracing_log_err+0x277/0x2e0 [<000000004a0e1b07>] parse_atom+0x966/0xb40 [<0000000023b24337>] parse_expr+0x5f3/0xdb0 [<00000000594ad074>] event_hist_trigger_parse+0x27f8/0x3560 [<00000000293a9645>] trigger_process_regex+0x135/0x1a0 [<000000005c22b4f2>] event_trigger_write+0x87/0xf0 [<000000002cadc509>] vfs_write+0x162/0x670 [<0000000059c3b9be>] ksys_write+0xca/0x170 [<00000000f1cddc00>] do_syscall_64+0x3e/0xc0 [<00000000868ac68c>] entry_SYSCALL_64_after_hwframe+0x72/0xdc unreferenced object 0xffff888170c35a00 (size 32): comm "bash", pid 869, jiffies 4294950577 (age 215.752s) hex dump (first 32 bytes): 0a 20 20 43 6f 6d 6d 61 6e 64 3a 20 68 69 73 74 . Command: hist 3a 6b 65 79 73 3d 78 0a 00 00 00 00 00 00 00 00 :keys=x......... backtrace: [<000000006a747de5>] __kmalloc+0x4d/0x160 [<000000000039df5f>] tracing_log_err+0x29b/0x2e0 [<000000004a0e1b07>] parse_atom+0x966/0xb40 [<0000000023b24337>] parse_expr+0x5f3/0xdb0 [<00000000594ad074>] event_hist_trigger_parse+0x27f8/0x3560 [<00000000293a9645>] trigger_process_regex+0x135/0x1a0 [<000000005c22b4f2>] event_trigger_write+0x87/0xf0 [<000000002cadc509>] vfs_write+0x162/0x670 [<0000000059c3b9be>] ksys_write+0xca/0x170 [<00000000f1cddc00>] do_syscall_64+0x3e/0xc0 [<00000000868ac68c>] entry_SYSCALL_64_after_hwframe+0x72/0xdc The problem is that the error log needs to be freed when the instance is removed.
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: 2f754e771b1a6feba670782e82c45555984ac43b , < 987f599fc556a4e64c405d8dde32c70311e8c278 (git)
Affected: 2f754e771b1a6feba670782e82c45555984ac43b , < 6e36373aa5ffa8e00fe7c71b3209f6f17081e552 (git)
Affected: 2f754e771b1a6feba670782e82c45555984ac43b , < 33d5d4e67a0e13c3ca6257fa67bf6503bc000878 (git)
Affected: 2f754e771b1a6feba670782e82c45555984ac43b , < c0cf0f55be043ef67c38f492aa37ed1986d2f6b6 (git)
Affected: 2f754e771b1a6feba670782e82c45555984ac43b , < 46771c34d6721abfd9e7903eaed2201051eebec6 (git)
Affected: 2f754e771b1a6feba670782e82c45555984ac43b , < 3357c6e429643231e60447b52ffbb7ac895aca22 (git)
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    Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.241 , ≤ 5.4.* (semver)
Unaffected: 5.10.178 , ≤ 5.10.* (semver)
Unaffected: 5.15.107 , ≤ 5.15.* (semver)
Unaffected: 6.1.24 , ≤ 6.1.* (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Free error logs of tracing instances\n\nWhen a tracing instance is removed, the error messages that hold errors\nthat occurred in the instance needs to be freed. The following reports a\nmemory leak:\n\n # cd /sys/kernel/tracing\n # mkdir instances/foo\n # echo \u0027hist:keys=x\u0027 \u003e instances/foo/events/sched/sched_switch/trigger\n # cat instances/foo/error_log\n [  117.404795] hist:sched:sched_switch: error: Couldn\u0027t find field\n   Command: hist:keys=x\n                      ^\n # rmdir instances/foo\n\nThen check for memory leaks:\n\n # echo scan \u003e /sys/kernel/debug/kmemleak\n # cat /sys/kernel/debug/kmemleak\nunreferenced object 0xffff88810d8ec700 (size 192):\n  comm \"bash\", pid 869, jiffies 4294950577 (age 215.752s)\n  hex dump (first 32 bytes):\n    60 dd 68 61 81 88 ff ff 60 dd 68 61 81 88 ff ff  `.ha....`.ha....\n    a0 30 8c 83 ff ff ff ff 26 00 0a 00 00 00 00 00  .0......\u0026.......\n  backtrace:\n    [\u003c00000000dae26536\u003e] kmalloc_trace+0x2a/0xa0\n    [\u003c00000000b2938940\u003e] tracing_log_err+0x277/0x2e0\n    [\u003c000000004a0e1b07\u003e] parse_atom+0x966/0xb40\n    [\u003c0000000023b24337\u003e] parse_expr+0x5f3/0xdb0\n    [\u003c00000000594ad074\u003e] event_hist_trigger_parse+0x27f8/0x3560\n    [\u003c00000000293a9645\u003e] trigger_process_regex+0x135/0x1a0\n    [\u003c000000005c22b4f2\u003e] event_trigger_write+0x87/0xf0\n    [\u003c000000002cadc509\u003e] vfs_write+0x162/0x670\n    [\u003c0000000059c3b9be\u003e] ksys_write+0xca/0x170\n    [\u003c00000000f1cddc00\u003e] do_syscall_64+0x3e/0xc0\n    [\u003c00000000868ac68c\u003e] entry_SYSCALL_64_after_hwframe+0x72/0xdc\nunreferenced object 0xffff888170c35a00 (size 32):\n  comm \"bash\", pid 869, jiffies 4294950577 (age 215.752s)\n  hex dump (first 32 bytes):\n    0a 20 20 43 6f 6d 6d 61 6e 64 3a 20 68 69 73 74  .  Command: hist\n    3a 6b 65 79 73 3d 78 0a 00 00 00 00 00 00 00 00  :keys=x.........\n  backtrace:\n    [\u003c000000006a747de5\u003e] __kmalloc+0x4d/0x160\n    [\u003c000000000039df5f\u003e] tracing_log_err+0x29b/0x2e0\n    [\u003c000000004a0e1b07\u003e] parse_atom+0x966/0xb40\n    [\u003c0000000023b24337\u003e] parse_expr+0x5f3/0xdb0\n    [\u003c00000000594ad074\u003e] event_hist_trigger_parse+0x27f8/0x3560\n    [\u003c00000000293a9645\u003e] trigger_process_regex+0x135/0x1a0\n    [\u003c000000005c22b4f2\u003e] event_trigger_write+0x87/0xf0\n    [\u003c000000002cadc509\u003e] vfs_write+0x162/0x670\n    [\u003c0000000059c3b9be\u003e] ksys_write+0xca/0x170\n    [\u003c00000000f1cddc00\u003e] do_syscall_64+0x3e/0xc0\n    [\u003c00000000868ac68c\u003e] entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nThe problem is that the error log needs to be freed when the instance is\nremoved."
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      "title": "tracing: Free error logs of tracing instances",
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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-2023-53375\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:54:41.639003Z\"}}}], \"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\": \"2026-01-14T18:54:37.320Z\"}}], \"cna\": {\"title\": \"tracing: Free error logs of tracing instances\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2f754e771b1a6feba670782e82c45555984ac43b\", \"lessThan\": \"987f599fc556a4e64c405d8dde32c70311e8c278\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2f754e771b1a6feba670782e82c45555984ac43b\", \"lessThan\": \"6e36373aa5ffa8e00fe7c71b3209f6f17081e552\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2f754e771b1a6feba670782e82c45555984ac43b\", \"lessThan\": \"33d5d4e67a0e13c3ca6257fa67bf6503bc000878\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2f754e771b1a6feba670782e82c45555984ac43b\", \"lessThan\": \"c0cf0f55be043ef67c38f492aa37ed1986d2f6b6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2f754e771b1a6feba670782e82c45555984ac43b\", \"lessThan\": \"46771c34d6721abfd9e7903eaed2201051eebec6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2f754e771b1a6feba670782e82c45555984ac43b\", \"lessThan\": \"3357c6e429643231e60447b52ffbb7ac895aca22\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/trace/trace.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.241\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.178\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.107\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.2.*\"}, {\"status\": \"unaffected\", \"version\": \"6.3\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/trace/trace.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/987f599fc556a4e64c405d8dde32c70311e8c278\"}, {\"url\": \"https://git.kernel.org/stable/c/6e36373aa5ffa8e00fe7c71b3209f6f17081e552\"}, {\"url\": \"https://git.kernel.org/stable/c/33d5d4e67a0e13c3ca6257fa67bf6503bc000878\"}, {\"url\": \"https://git.kernel.org/stable/c/c0cf0f55be043ef67c38f492aa37ed1986d2f6b6\"}, {\"url\": \"https://git.kernel.org/stable/c/46771c34d6721abfd9e7903eaed2201051eebec6\"}, {\"url\": \"https://git.kernel.org/stable/c/3357c6e429643231e60447b52ffbb7ac895aca22\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntracing: Free error logs of tracing instances\\n\\nWhen a tracing instance is removed, the error messages that hold errors\\nthat occurred in the instance needs to be freed. The following reports a\\nmemory leak:\\n\\n # cd /sys/kernel/tracing\\n # mkdir instances/foo\\n # echo \u0027hist:keys=x\u0027 \u003e instances/foo/events/sched/sched_switch/trigger\\n # cat instances/foo/error_log\\n [  117.404795] hist:sched:sched_switch: error: Couldn\u0027t find field\\n   Command: hist:keys=x\\n                      ^\\n # rmdir instances/foo\\n\\nThen check for memory leaks:\\n\\n # echo scan \u003e /sys/kernel/debug/kmemleak\\n # cat /sys/kernel/debug/kmemleak\\nunreferenced object 0xffff88810d8ec700 (size 192):\\n  comm \\\"bash\\\", pid 869, jiffies 4294950577 (age 215.752s)\\n  hex dump (first 32 bytes):\\n    60 dd 68 61 81 88 ff ff 60 dd 68 61 81 88 ff ff  `.ha....`.ha....\\n    a0 30 8c 83 ff ff ff ff 26 00 0a 00 00 00 00 00  .0......\u0026.......\\n  backtrace:\\n    [\u003c00000000dae26536\u003e] kmalloc_trace+0x2a/0xa0\\n    [\u003c00000000b2938940\u003e] tracing_log_err+0x277/0x2e0\\n    [\u003c000000004a0e1b07\u003e] parse_atom+0x966/0xb40\\n    [\u003c0000000023b24337\u003e] parse_expr+0x5f3/0xdb0\\n    [\u003c00000000594ad074\u003e] event_hist_trigger_parse+0x27f8/0x3560\\n    [\u003c00000000293a9645\u003e] trigger_process_regex+0x135/0x1a0\\n    [\u003c000000005c22b4f2\u003e] event_trigger_write+0x87/0xf0\\n    [\u003c000000002cadc509\u003e] vfs_write+0x162/0x670\\n    [\u003c0000000059c3b9be\u003e] ksys_write+0xca/0x170\\n    [\u003c00000000f1cddc00\u003e] do_syscall_64+0x3e/0xc0\\n    [\u003c00000000868ac68c\u003e] entry_SYSCALL_64_after_hwframe+0x72/0xdc\\nunreferenced object 0xffff888170c35a00 (size 32):\\n  comm \\\"bash\\\", pid 869, jiffies 4294950577 (age 215.752s)\\n  hex dump (first 32 bytes):\\n    0a 20 20 43 6f 6d 6d 61 6e 64 3a 20 68 69 73 74  .  Command: hist\\n    3a 6b 65 79 73 3d 78 0a 00 00 00 00 00 00 00 00  :keys=x.........\\n  backtrace:\\n    [\u003c000000006a747de5\u003e] __kmalloc+0x4d/0x160\\n    [\u003c000000000039df5f\u003e] tracing_log_err+0x29b/0x2e0\\n    [\u003c000000004a0e1b07\u003e] parse_atom+0x966/0xb40\\n    [\u003c0000000023b24337\u003e] parse_expr+0x5f3/0xdb0\\n    [\u003c00000000594ad074\u003e] event_hist_trigger_parse+0x27f8/0x3560\\n    [\u003c00000000293a9645\u003e] trigger_process_regex+0x135/0x1a0\\n    [\u003c000000005c22b4f2\u003e] event_trigger_write+0x87/0xf0\\n    [\u003c000000002cadc509\u003e] vfs_write+0x162/0x670\\n    [\u003c0000000059c3b9be\u003e] ksys_write+0xca/0x170\\n    [\u003c00000000f1cddc00\u003e] do_syscall_64+0x3e/0xc0\\n    [\u003c00000000868ac68c\u003e] entry_SYSCALL_64_after_hwframe+0x72/0xdc\\n\\nThe problem is that the error log needs to be freed when the instance is\\nremoved.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.241\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.178\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.107\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.24\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2.11\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3\", \"versionStartIncluding\": \"5.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-18T13:33:21.664Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53375\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T19:03:03.455Z\", \"dateReserved\": \"2025-09-17T14:54:09.735Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-18T13:33:21.664Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.