CVE-2023-53649 (GCVE-0-2023-53649)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:19 – Updated: 2026-05-11 19:49
VLAI
Title
perf trace: Really free the evsel->priv area
Summary
In the Linux kernel, the following vulnerability has been resolved: perf trace: Really free the evsel->priv area In 3cb4d5e00e037c70 ("perf trace: Free syscall tp fields in evsel->priv") it only was freeing if strcmp(evsel->tp_format->system, "syscalls") returned zero, while the corresponding initialization of evsel->priv was being performed if it was _not_ zero, i.e. if the tp system wasn't 'syscalls'. Just stop looking for that and free it if evsel->priv was set, which should be equivalent. Also use the pre-existing evsel_trace__delete() function. This resolves these leaks, detected with: $ make EXTRA_CFLAGS="-fsanitize=address" BUILD_BPF_SKEL=1 CORESIGHT=1 O=/tmp/build/perf-tools-next -C tools/perf install-bin ================================================================= ==481565==ERROR: LeakSanitizer: detected memory leaks Direct leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097) #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966) #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307 #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333 #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458 #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480 #6 0x540e8b in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3212 #7 0x540e8b in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891 #8 0x540e8b in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156 #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323 #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377 #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421 #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537 #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f) Direct leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097) #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966) #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307 #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333 #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458 #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480 #6 0x540dd1 in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3205 #7 0x540dd1 in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891 #8 0x540dd1 in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156 #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323 #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377 #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421 #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537 #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f) SUMMARY: AddressSanitizer: 80 byte(s) leaked in 2 allocation(s). [root@quaco ~]# With this we plug all leaks with "perf trace sleep 1".
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < c3bc668581e71e7c3bc7eb1d647f25f8db222163 (git)
Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < 62dd514c34be63d3d5cae1f52a7e8b96c6dd6630 (git)
Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < 27f396f64537b1ae48d0644d7cbf0d250b3c0b33 (git)
Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < 7962ef13651a9163f07b530607392ea123482e8a (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.54 , ≤ 6.1.* (semver)
Unaffected: 6.5.4 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
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            {
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf trace: Really free the evsel-\u003epriv area\n\nIn 3cb4d5e00e037c70 (\"perf trace: Free syscall tp fields in\nevsel-\u003epriv\") it only was freeing if strcmp(evsel-\u003etp_format-\u003esystem,\n\"syscalls\") returned zero, while the corresponding initialization of\nevsel-\u003epriv was being performed if it was _not_ zero, i.e. if the tp\nsystem wasn\u0027t \u0027syscalls\u0027.\n\nJust stop looking for that and free it if evsel-\u003epriv was set, which\nshould be equivalent.\n\nAlso use the pre-existing evsel_trace__delete() function.\n\nThis resolves these leaks, detected with:\n\n  $ make EXTRA_CFLAGS=\"-fsanitize=address\" BUILD_BPF_SKEL=1 CORESIGHT=1 O=/tmp/build/perf-tools-next -C tools/perf install-bin\n\n  =================================================================\n  ==481565==ERROR: LeakSanitizer: detected memory leaks\n\n  Direct leak of 40 byte(s) in 1 object(s) allocated from:\n      #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097)\n      #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966)\n      #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307\n      #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333\n      #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458\n      #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480\n      #6 0x540e8b in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3212\n      #7 0x540e8b in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891\n      #8 0x540e8b in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156\n      #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323\n      #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377\n      #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421\n      #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537\n      #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f)\n\n  Direct leak of 40 byte(s) in 1 object(s) allocated from:\n      #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097)\n      #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966)\n      #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307\n      #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333\n      #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458\n      #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480\n      #6 0x540dd1 in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3205\n      #7 0x540dd1 in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891\n      #8 0x540dd1 in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156\n      #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323\n      #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377\n      #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421\n      #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537\n      #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f)\n\n  SUMMARY: AddressSanitizer: 80 byte(s) leaked in 2 allocation(s).\n  [root@quaco ~]#\n\nWith this we plug all leaks with \"perf trace sleep 1\"."
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        "dateUpdated": "2026-05-11T19:49:14.554Z",
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/7962ef13651a9163f07b530607392ea123482e8a"
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      "title": "perf trace: Really free the evsel-\u003epriv area",
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  "cveMetadata": {
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    "cveId": "CVE-2023-53649",
    "datePublished": "2025-10-07T15:19:46.459Z",
    "dateReserved": "2025-10-07T15:16:59.659Z",
    "dateUpdated": "2026-05-11T19:49:14.554Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53649",
      "date": "2026-05-26",
      "epss": "0.00017",
      "percentile": "0.0464"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53649\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-07T16:15:48.380\",\"lastModified\":\"2026-02-03T22:29:01.160\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nperf trace: Really free the evsel-\u003epriv area\\n\\nIn 3cb4d5e00e037c70 (\\\"perf trace: Free syscall tp fields in\\nevsel-\u003epriv\\\") it only was freeing if strcmp(evsel-\u003etp_format-\u003esystem,\\n\\\"syscalls\\\") returned zero, while the corresponding initialization of\\nevsel-\u003epriv was being performed if it was _not_ zero, i.e. if the tp\\nsystem wasn\u0027t \u0027syscalls\u0027.\\n\\nJust stop looking for that and free it if evsel-\u003epriv was set, which\\nshould be equivalent.\\n\\nAlso use the pre-existing evsel_trace__delete() function.\\n\\nThis resolves these leaks, detected with:\\n\\n  $ make EXTRA_CFLAGS=\\\"-fsanitize=address\\\" BUILD_BPF_SKEL=1 CORESIGHT=1 O=/tmp/build/perf-tools-next -C tools/perf install-bin\\n\\n  =================================================================\\n  ==481565==ERROR: LeakSanitizer: detected memory leaks\\n\\n  Direct leak of 40 byte(s) in 1 object(s) allocated from:\\n      #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097)\\n      #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966)\\n      #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307\\n      #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333\\n      #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458\\n      #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480\\n      #6 0x540e8b in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3212\\n      #7 0x540e8b in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891\\n      #8 0x540e8b in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156\\n      #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323\\n      #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377\\n      #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421\\n      #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537\\n      #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f)\\n\\n  Direct leak of 40 byte(s) in 1 object(s) allocated from:\\n      #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097)\\n      #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966)\\n      #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307\\n      #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333\\n      #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458\\n      #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480\\n      #6 0x540dd1 in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3205\\n      #7 0x540dd1 in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891\\n      #8 0x540dd1 in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156\\n      #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323\\n      #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377\\n      #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421\\n      #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537\\n      #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f)\\n\\n  SUMMARY: AddressSanitizer: 80 byte(s) leaked in 2 allocation(s).\\n  [root@quaco ~]#\\n\\nWith this we plug all leaks with \\\"perf trace sleep 1\\\".\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.14.1\",\"versionEndExcluding\":\"5.15.132\",\"matchCriteriaId\":\"2B331847-D1BC-4C9B-A3EF-C9C65BB0631D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.54\",\"matchCriteriaId\":\"7353B9B4-AFFC-45DE-840E-1A7D2B00E7AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.5.4\",\"matchCriteriaId\":\"CA8C8B88-AF36-445D-A228-AD78F3615373\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"6A05198E-F8FA-4517-8D0E-8C95066AED38\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"23B9E5C6-FAB5-4A02-9E39-27C8787B0991\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"D185CF67-7E4A-4154-93DB-CE379C67DB56\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"D1DA0AF6-02F4-47C7-A318-8C006ED0C665\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"49DD30B1-8C99-4C38-A66B-CAB3827BEE8A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"15013998-4AF0-4CDC-AB13-829ECD8A8E66\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"376A25CF-C05B-48F1-99B1-8FB0314A8E06\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/27f396f64537b1ae48d0644d7cbf0d250b3c0b33\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/62dd514c34be63d3d5cae1f52a7e8b96c6dd6630\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7962ef13651a9163f07b530607392ea123482e8a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c3bc668581e71e7c3bc7eb1d647f25f8db222163\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.