CVE-2025-38322
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
perf/x86/intel: Fix crash in icl_update_topdown_event()
The perf_fuzzer found a hard-lockup crash on a RaptorLake machine:
CPUs 16-23 are E-core CPUs that don't support the perf metrics feature. The icl_update_topdown_event() should not be invoked on these CPUs.
It's a regression of commit:
The bug introduced by that commit is that the is_topdown_event() function is mistakenly used to replace the is_topdown_count() call to check if the topdown functions for the perf metrics feature should be invoked.
Fix it.
Detalles técnicos trazas, registros y código del informe original
Oops: general protection fault, maybe for address 0xffff89aeceab400: 0000
CPU: 23 UID: 0 PID: 0 Comm: swapper/23
Tainted: [W]=WARN
Hardware name: Dell Inc. Precision 9660/0VJ762
RIP: 0010:native_read_pmc+0x7/0x40
Code: cc e8 8d a9 01 00 48 89 03 5b cd cc cc cc cc 0f 1f ...
RSP: 000:fffb03100273de8 EFLAGS: 00010046
....
Call Trace:
<TASK>
icl_update_topdown_event+0x165/0x190
? ktime_get+0x38/0xd0
intel_pmu_read_event+0xf9/0x210
__perf_event_read+0xf9/0x210
f9bdf1f95339 ("perf/x86/intel: Avoid disable PMU if !cpuc->enabled in sample read")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: 0.18%
- Percentil entre todas las CVEs puntuadas: 6
- 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 (2)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/702ea6028032d6c1fe96c2d4762a3575e3654819
- https://git.kernel.org/stable/c/79e2dd573116d3338507c311460da9669095c94d
- https://git.kernel.org/stable/c/a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f
- https://git.kernel.org/stable/c/b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed
- https://git.kernel.org/stable/c/e97c45c770f5e56c784a46c2a96ab968d26b97d9
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/intel: Fix crash in icl_update_topdown_event()\n\nThe perf_fuzzer found a hard-lockup crash on a RaptorLake machine:\n\n Oops: general protection fault, maybe for address 0xffff89aeceab400: 0000\n CPU: 23 UID: 0 PID: 0 Comm: swapper/23\n Tainted: [W]=WARN\n Hardware name: Dell Inc. Precision 9660/0VJ762\n RIP: 0010:native_read_pmc+0x7/0x40\n Code: cc e8 8d a9 01 00 48 89 03 5b cd cc cc cc cc 0f 1f ...\n RSP: 000:fffb03100273de8 EFLAGS: 00010046\n ....\n Call Trace:\n <TASK>\n icl_update_topdown_event+0x165/0x190\n ? ktime_get+0x38/0xd0\n intel_pmu_read_event+0xf9/0x210\n __perf_event_read+0xf9/0x210\n\nCPUs 16-23 are E-core CPUs that don't support the perf metrics feature.\nThe icl_update_topdown_event() should not be invoked on these CPUs.\n\nIt's a regression of commit:\n\n f9bdf1f95339 (\"perf/x86/intel: Avoid disable PMU if !cpuc->enabled in sample read\")\n\nThe bug introduced by that commit is that the is_topdown_event() function\nis mistakenly used to replace the is_topdown_count() call to check if the\ntopdown functions for the perf metrics feature should be invoked.\n\nFix it."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/x86/intel: Se corrige un fallo en icl_update_topdown_event(). perf_fuzzer encontró un fallo de bloqueo duro en una máquina RaptorLake: Oops: fallo de protección general, tal vez para la dirección 0xffff89aeceab400: 0000 CPU: 23 UID: 0 PID: 0 Comm: swapper/23 Tainted: [W]=WARN Nombre del hardware: Dell Inc. Precision 9660/0VJ762 RIP: 0010:native_read_pmc+0x7/0x40 Código: cc e8 8d a9 01 00 48 89 03 5b cd cc cc cc cc 0f 1f ... RSP: 000:fffb03100273de8 EFLAGS: 00010046 .... Seguimiento de llamadas: icl_update_topdown_event+0x165/0x190 ? ktime_get+0x38/0xd0 intel_pmu_read_event+0xf9/0x210 __perf_event_read+0xf9/0x210 Las CPU 16-23 son CPU de núcleo E que no admiten la función de métricas de rendimiento. No se debe invocar icl_update_topdown_event() en estas CPU. Es una regresión del commit: f9bdf1f95339 (\"perf/x86/intel: Evitar deshabilitar PMU si !cpuc->enabled en la lectura de muestra\") El error introducido por esa confirmación es que la función is_topdown_event() se usa por error para reemplazar la llamada is_topdown_count() para verificar si se deben invocar las funciones descendentes para la característica de métricas de rendimiento. Arréglenlo."
}
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"lastModified": "2026-07-14T13:17:39.870",
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