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CVE-2026-64021

Estado: Pendiente de análisisSin puntuar—

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

drm/xe/oa: Fix exec_queue leak on width check in stream open

In xe_oa_stream_open_ioctl(), when param.exec_q->width > 1 the function returns -EOPNOTSUPP directly, skipping the existing err_exec_q cleanup path. The exec_queue reference obtained by xe_exec_queue_lookup() is leaked.

The exec queue holds a reference on the xe_file, which is only dropped during queue teardown. The leaked lookup ref is not on the file's exec_queue xarray, so file close cannot release it. This keeps both the exec queue and the file private state pinned indefinitely.

Leer descripción completaMostrar menos

Jump to err_exec_q instead of returning directly so the reference is released.

(cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)

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-2026-64021",
  "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": "f0ed39830e6064d62f9c5393505677a26569bb56",
              "lessThan": "04ef7592eaadd9ca8f8f66e76452f73525cff819",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
              "lessThan": "4b0c4f0c1b133d4bfa31c167200bcda646873328",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f0ed39830e6064d62f9c5393505677a26569bb56",
              "lessThan": "4d25342543c01310fc4e0cba7cb17c775e2421e2",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/xe/xe_oa.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/xe/xe_oa.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-07-19T16:17:42.107",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/oa: Fix exec_queue leak on width check in stream open\n\nIn xe_oa_stream_open_ioctl(), when param.exec_q->width > 1 the\nfunction returns -EOPNOTSUPP directly, skipping the existing\nerr_exec_q cleanup path. The exec_queue reference obtained by\nxe_exec_queue_lookup() is leaked.\n\nThe exec queue holds a reference on the xe_file, which is only\ndropped during queue teardown. The leaked lookup ref is not on\nthe file's exec_queue xarray, so file close cannot release it.\nThis keeps both the exec queue and the file private state pinned\nindefinitely.\n\nJump to err_exec_q instead of returning directly so the reference\nis released.\n\n(cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)"
    }
  ],
  "lastModified": "2026-07-30T14:59:47.950",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}