---
id: CVE-2026-64021
title: |-
  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, skip…
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, skip…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-401
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.13.1, < 6.18.34'
  - 'linux_kernel >= 6.19, < 7.0.11'
  - linux_kernel = 6.13
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.11
published: '2026-07-19'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T14:55:44.783'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64021'
references:
  - url: 'https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00206
epssPercentile: 0.09957
ingestedAt: '2026-10-13T15:33:40.023Z'
---

## Overview

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)

## Affected

- `linux_kernel >= 6.13.1, < 6.18.34`
- `linux_kernel >= 6.19, < 7.0.11`
- `linux_kernel = 6.13`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.11`