CVE-2023-53649
Estado: AnalizadaMedia (5.5)—
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:
With this we plug all leaks with "perf trace sleep 1".
Detalles técnicos trazas, registros y código del informe original
$ 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 ~]#CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-401
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-53649",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"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"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3cb4d5e00e037c70f239173bdd399a7e6040830f",
"lessThan": "c3bc668581e71e7c3bc7eb1d647f25f8db222163",
"versionType": "git"
},
{
"status": "affected",
"version": "3cb4d5e00e037c70f239173bdd399a7e6040830f",
"lessThan": "62dd514c34be63d3d5cae1f52a7e8b96c6dd6630",
"versionType": "git"
},
{
"status": "affected",
"version": "3cb4d5e00e037c70f239173bdd399a7e6040830f",
"lessThan": "27f396f64537b1ae48d0644d7cbf0d250b3c0b33",
"versionType": "git"
},
{
"status": "affected",
"version": "3cb4d5e00e037c70f239173bdd399a7e6040830f",
"lessThan": "7962ef13651a9163f07b530607392ea123482e8a",
"versionType": "git"
}
],
"programFiles": [
"tools/perf/builtin-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": "5.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.132",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.54",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.5.4",
"versionType": "semver",
"lessThanOrEqual": "6.5.*"
},
{
"status": "unaffected",
"version": "6.6",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"tools/perf/builtin-trace.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-10-07T16:15:48.380",
"references": [
{
"url": "https://git.kernel.org/stable/c/27f396f64537b1ae48d0644d7cbf0d250b3c0b33",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/62dd514c34be63d3d5cae1f52a7e8b96c6dd6630",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7962ef13651a9163f07b530607392ea123482e8a",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c3bc668581e71e7c3bc7eb1d647f25f8db222163",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-401"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf trace: Really free the evsel->priv area\n\nIn 3cb4d5e00e037c70 (\"perf trace: Free syscall tp fields in\nevsel->priv\") it only was freeing if strcmp(evsel->tp_format->system,\n\"syscalls\") returned zero, while the corresponding initialization of\nevsel->priv was being performed if it was _not_ zero, i.e. if the tp\nsystem wasn't 'syscalls'.\n\nJust stop looking for that and free it if evsel->priv 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\"."
}
],
"lastModified": "2026-06-17T06:45:47.717",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2B331847-D1BC-4C9B-A3EF-C9C65BB0631D",
"versionEndExcluding": "5.15.132",
"versionStartIncluding": "5.14.1"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7353B9B4-AFFC-45DE-840E-1A7D2B00E7AD",
"versionEndExcluding": "6.1.54",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CA8C8B88-AF36-445D-A228-AD78F3615373",
"versionEndExcluding": "6.5.4",
"versionStartIncluding": "6.2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6A05198E-F8FA-4517-8D0E-8C95066AED38"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "23B9E5C6-FAB5-4A02-9E39-27C8787B0991"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D185CF67-7E4A-4154-93DB-CE379C67DB56"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D1DA0AF6-02F4-47C7-A318-8C006ED0C665"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "49DD30B1-8C99-4C38-A66B-CAB3827BEE8A"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "15013998-4AF0-4CDC-AB13-829ECD8A8E66"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "376A25CF-C05B-48F1-99B1-8FB0314A8E06"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}