CVE-2026-52976: Linux kernel · drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · CVSS 7.8 High · fixed in f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43 : patch Linux kernel soon.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-10-16.
- Patch
- Available – fixed in f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43, f3cc22d4df3ed58439ea7e21daa54c3608e03b78, 753b149d5a433eb19e0c1b0eb4526a6e26120d1f +1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Linux kernel to f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43, f3cc22d4df3ed58439ea7e21daa54c3608e03b78, 753b149d5a433eb19e0c1b0eb4526a6e26120d1f or 1be55646d8a2035343b012dcb12210db7bb8b056.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
Description
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)
References
- git.kernel.org/stable/c/f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43 (opens in a new tab)
- git.kernel.org/stable/c/753b149d5a433eb19e0c1b0eb4526a6e26120d1f (opens in a new tab)
- git.kernel.org/stable/c/1be55646d8a2035343b012dcb12210db7bb8b056 (opens in a new tab)
- git.kernel.org/stable/c/f3cc22d4df3ed58439ea7e21daa54c3608e03b78 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-52976 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2492284 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52976.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:52764 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:42919 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:52667 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:45192 (opens in a new tab)