High [CVE-2026-52976] Fix error cleanup in xe_exec_queue_create_ioctl
This high-severity Red Hat Linux advisory covers CVE-2026-52976 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat package: kernel-rt.
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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.
Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
- kernel-0:6.12.0-211.37.1.el10_2
- kernel-0:6.12.0-55.95.1.el10_0
- kernel-0:5.14.0-687.30.1.el9_8
- kernel-0:5.14.0-570.132.1.el9_6
- RHSA-2026:42919
- RHSA-2026:52764
- RHSA-2026:45192
- RHSA-2026:52667
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
Mitigation
Upgrade to a fixed release: kernel-0:6.12.0-211.37.1.el10_2, kernel-0:6.12.0-55.95.1.el10_0, kernel-0:5.14.0-687.30.1.el9_8, kernel-0:5.14.0-570.132.1.el9_6, RHSA-2026:42919, RHSA-2026:52764. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
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