fkie_cve-2025-38322
Vulnerability from fkie_nvd
Published
2025-07-10 09:15
Modified
2025-08-01 09:15
Severity ?
Summary
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: 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 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: f9bdf1f95339 ("perf/x86/intel: Avoid disable PMU if !cpuc->enabled in sample read") 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/79e2dd573116d3338507c311460da9669095c94d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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    \u003cTASK\u003e\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\u0027t support the perf metrics feature.\nThe icl_update_topdown_event() should not be invoked on these CPUs.\n\nIt\u0027s a regression of commit:\n\n  f9bdf1f95339 (\"perf/x86/intel: Avoid disable PMU if !cpuc-\u003eenabled 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 encontr\u00f3 un fallo de bloqueo duro en una m\u00e1quina RaptorLake: Oops: fallo de protecci\u00f3n general, tal vez para la direcci\u00f3n 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 C\u00f3digo: 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 n\u00facleo E que no admiten la funci\u00f3n de m\u00e9tricas de rendimiento. No se debe invocar icl_update_topdown_event() en estas CPU. Es una regresi\u00f3n del commit: f9bdf1f95339 (\"perf/x86/intel: Evitar deshabilitar PMU si !cpuc-\u0026gt;enabled en la lectura de muestra\") El error introducido por esa confirmaci\u00f3n es que la funci\u00f3n 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 caracter\u00edstica de m\u00e9tricas de rendimiento. Arr\u00e9glenlo."
    }
  ],
  "id": "CVE-2025-38322",
  "lastModified": "2025-08-01T09:15:32.753",
  "metrics": {},
  "published": "2025-07-10T09:15:26.240",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/79e2dd573116d3338507c311460da9669095c94d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a85cc69acdcb05f8cd226b8ea0778b8e2e887e6f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b0823d5fbacb1c551d793cbfe7af24e0d1fa45ed"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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