CVE-2026-52976 (GCVE-0-2026-52976)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:28 – Updated: 2026-07-22 12:08
VLAI
Title
drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() Two error handling issues exist in xe_exec_queue_create_ioctl(): 1. When xe_hw_engine_group_add_exec_queue() fails, the error path jumps to put_exec_queue which skips xe_exec_queue_kill(). If the VM is in preempt fence mode, xe_vm_add_compute_exec_queue() has already added the queue to the VM's compute exec queue list. Skipping the kill leaves the queue on that list, leading to a dangling pointer after the queue is freed. 2. When xa_alloc() fails after xe_hw_engine_group_add_exec_queue() has succeeded, the error path does not call xe_hw_engine_group_del_exec_queue() to remove the queue from the hw engine group list. The queue is then freed while still linked into the hw engine group, causing a use-after-free. Fix both by: - Changing the xe_hw_engine_group_add_exec_queue() failure path to jump to kill_exec_queue so that xe_exec_queue_kill() properly removes the queue from the VM's compute list. - Adding a del_hw_engine_group label before kill_exec_queue for the xa_alloc() failure path, which removes the queue from the hw engine group before proceeding with the rest of the cleanup. (cherry picked from commit 37c831f401746a45d510b312b0ed7a77b1e06ec8)
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-825 - Expired Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43 (git)
Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < 753b149d5a433eb19e0c1b0eb4526a6e26120d1f (git)
Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < 1be55646d8a2035343b012dcb12210db7bb8b056 (git)
Affected: 7970cb36966c9b9183255dc097ae0446300eebcf , < f3cc22d4df3ed58439ea7e21daa54c3608e03b78 (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:6.12.0-211.37.1.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-24T16:01:58+00:00",
      "cve": "CVE-2026-52976",
      "id": "CVE-2026-52976",
      "initial_release_date": "2026-06-24T00:00:00+00:00",
      "product_status:fixed": "612",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52976.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-21T23:52:06Z",
      "cve": "CVE-2026-52976",
      "id": "CVE-2026-52976",
      "initial_release_date": "2026-06-27T01:55:09Z",
      "product_status:known_not_affected": "236",
      "product_status:recommended": "98",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-52976",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-52976.json",
      "version": "4"
    }
  }
}



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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.