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CVE-2025-40340

Estado: AplazadaSin puntuar—

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

drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.

I saw an oops in xe_gem_fault when running the xe-fast-feedback testlist against the realtime kernel without debug options enabled.

The panic happens after core_hotunplug unbind-rebind finishes. Presumably what happens is that a process mmaps, unlocks because of the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left, causing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since there was nothing left to populate, and then oopses in "mem_type_is_vram(tbo->resource->mem_type)" because tbo->resource is NULL.

Leer descripción completaMostrar menos

It's convoluted, but fits the data and explains the oops after the test exits.

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)

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{
  "id": "CVE-2025-40340",
  "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": "dd08ebf6c3525a7ea2186e636df064ea47281987",
              "lessThan": "99428bd6123d5676209dfb1d7a8f176cc830b665",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
              "lessThan": "29a3064f9c5a908aaf0b39cd6ed30374db11840d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
              "lessThan": "1cda3c755bb7770be07d75949bb0f45fb88651f6",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/xe/xe_bo.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.8",
              "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": [
            "drivers/gpu/drm/xe/xe_bo.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-09T16:17:44.267",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1cda3c755bb7770be07d75949bb0f45fb88651f6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/29a3064f9c5a908aaf0b39cd6ed30374db11840d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/99428bd6123d5676209dfb1d7a8f176cc830b665",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.\n\nI saw an oops in xe_gem_fault when running the xe-fast-feedback\ntestlist against the realtime kernel without debug options enabled.\n\nThe panic happens after core_hotunplug unbind-rebind finishes.\nPresumably what happens is that a process mmaps, unlocks because\nof the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,\ncausing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since\nthere was nothing left to populate, and then oopses in\n\"mem_type_is_vram(tbo->resource->mem_type)\" because tbo->resource\nis NULL.\n\nIt's convoluted, but fits the data and explains the oops after\nthe test exits."
    }
  ],
  "lastModified": "2026-06-17T09:21:41.070",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}