CVE-2026-64021 (GCVE-0-2026-64021)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-07-19 15:39
VLAI
Title
drm/xe/oa: Fix exec_queue leak on width check in stream open
Summary
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)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f0ed39830e6064d62f9c5393505677a26569bb56 , < 04ef7592eaadd9ca8f8f66e76452f73525cff819 (git)
Affected: f0ed39830e6064d62f9c5393505677a26569bb56 , < 4b0c4f0c1b133d4bfa31c167200bcda646873328 (git)
Affected: f0ed39830e6064d62f9c5393505677a26569bb56 , < 4d25342543c01310fc4e0cba7cb17c775e2421e2 (git)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_oa.c"
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      "descriptions": [
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          "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-\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)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:39:14.741Z",
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        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2"
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      "title": "drm/xe/oa: Fix exec_queue leak on width check in stream open",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64021",
    "datePublished": "2026-07-19T15:39:14.741Z",
    "dateReserved": "2026-07-19T07:54:57.027Z",
    "dateUpdated": "2026-07-19T15:39:14.741Z",
    "state": "PUBLISHED"
  },
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}



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