GHSA-GWPC-CVF2-G3X5

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31
VLAI
Details

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.

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

(cherry picked from commit 339fa0be9e4a5d69fa47e91f4a36574224fb478f)

Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-64021"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:42Z",
    "severity": null
  },
  "details": "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-\u003ewidth \u003e 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\u0027s 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)",
  "id": "GHSA-gwpc-cvf2-g3x5",
  "modified": "2026-07-19T18:31:49Z",
  "published": "2026-07-19T18:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64021"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.