CVE-2026-52976drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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)
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-825
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 7970cb36966c9b9183255dc097ae0446300eebcf before f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43; 7970cb36966c9b9183255dc097ae0446300eebcf builds before 753b149d5a433eb19e0c1b0eb4526a6e26120d1f; 7970cb36966c9b9183255dc097ae0446300eebcf builds before 1be55646d8a2035343b012dcb12210db7bb8b056; from 7970cb36966c9b9183255dc097ae0446300eebcf before f3cc22d4df3ed58439ea7e21daa54c3608e03b78 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:6.12.0-211.37.1.el10_2 not affected | CISA ADP |
linux linux_kernel linux:linux_kernel | from 6.12 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10; 7.1 | NVD |
References
- https://git.kernel.org/stable/c/f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43patch
- https://git.kernel.org/stable/c/753b149d5a433eb19e0c1b0eb4526a6e26120d1fpatch
- https://git.kernel.org/stable/c/1be55646d8a2035343b012dcb12210db7bb8b056patch
- https://git.kernel.org/stable/c/f3cc22d4df3ed58439ea7e21daa54c3608e03b78patch
- https://access.redhat.com/errata/RHSA-2026:42919
- https://access.redhat.com/errata/RHSA-2026:45192
- https://access.redhat.com/errata/RHSA-2026:52667
- https://access.redhat.com/errata/RHSA-2026:52764
- https://access.redhat.com/security/cve/CVE-2026-52976third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492284issue-tracking, third-party-advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52976.jsonthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.