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CVE-2025-40359

Estado: AplazadaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

perf/x86/intel: Fix KASAN global-out-of-bounds warning

When running "perf mem record" command on CWF, the below KASAN global-out-of-bounds warning is seen.

The issue is caused by below code in __grt_latency_data(). The code tries to access x86_hybrid_pmu structure which doesn't exist on non-hybrid platform like CWF.

So add is_hybrid() check before calling this WARN_ON_ONCE to fix the global-out-of-bounds access issue.

Detalles técnicos trazas, registros y código del informe original
  ==================================================================
  BUG: KASAN: global-out-of-bounds in cmt_latency_data+0x176/0x1b0
  Read of size 4 at addr ffffffffb721d000 by task dtlb/9850

  Call Trace:

   kasan_report+0xb8/0xf0
   cmt_latency_data+0x176/0x1b0
   setup_arch_pebs_sample_data+0xf49/0x2560
   intel_pmu_drain_arch_pebs+0x577/0xb00
   handle_pmi_common+0x6c4/0xc80

        WARN_ON_ONCE(hybrid_pmu(event->pmu)->pmu_type == hybrid_big)

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-40359",
  "cveTags": [],
  "metrics": {},
  "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": "090262439f66df03d4e9d0e52e14104b729e2ef8",
              "lessThan": "1b61a1da3d8105ea1be548c94c2856697eb7ffd1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "090262439f66df03d4e9d0e52e14104b729e2ef8",
              "lessThan": "710a72e81a7028e1ad1a10eb14f941f8dd45ffd3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "090262439f66df03d4e9d0e52e14104b729e2ef8",
              "lessThan": "0ba6502ce167fc3d598c08c2cc3b4ed7ca5aa251",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/x86/events/intel/ds.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/x86/events/intel/ds.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-16T14:15:47.863",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0ba6502ce167fc3d598c08c2cc3b4ed7ca5aa251",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1b61a1da3d8105ea1be548c94c2856697eb7ffd1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/710a72e81a7028e1ad1a10eb14f941f8dd45ffd3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/intel: Fix KASAN global-out-of-bounds warning\n\nWhen running \"perf mem record\" command on CWF, the below KASAN\nglobal-out-of-bounds warning is seen.\n\n  ==================================================================\n  BUG: KASAN: global-out-of-bounds in cmt_latency_data+0x176/0x1b0\n  Read of size 4 at addr ffffffffb721d000 by task dtlb/9850\n\n  Call Trace:\n\n   kasan_report+0xb8/0xf0\n   cmt_latency_data+0x176/0x1b0\n   setup_arch_pebs_sample_data+0xf49/0x2560\n   intel_pmu_drain_arch_pebs+0x577/0xb00\n   handle_pmi_common+0x6c4/0xc80\n\nThe issue is caused by below code in __grt_latency_data(). The code\ntries to access x86_hybrid_pmu structure which doesn't exist on\nnon-hybrid platform like CWF.\n\n        WARN_ON_ONCE(hybrid_pmu(event->pmu)->pmu_type == hybrid_big)\n\nSo add is_hybrid() check before calling this WARN_ON_ONCE to fix the\nglobal-out-of-bounds access issue."
    }
  ],
  "lastModified": "2026-06-17T09:21:42.900",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}