CVE-2026-52976 is a memory-safety vulnerability in the Linux kernel DRM/Xe subsystem, specifically in xe_exec_queue_create_ioctl(). The flaw is caused by incorrect error-path cleanup during execution queue creation. In one failure path, if xe_hw_engine_group_add_exec_queue() fails, cleanup jumps to a path that skips xe_exec_queue_kill(); when the VM is operating in preempt fence mode, the queue may already have been added to the VM's compute execution queue list by xe_vm_add_compute_exec_queue(), leaving a stale list entry after the queue is freed and creating a dangling pointer. In a second failure path, if xa_alloc() fails after xe_hw_engine_group_add_exec_queue() has succeeded, the code frees the queue without first removing it from the hardware engine group list via xe_hw_engine_group_del_exec_queue(), leaving the freed object still linked and creating a use-after-free condition. The fix corrects both cleanup paths so the queue is removed from all relevant lists before teardown completes.
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A Linux kernel drm/xe vulnerability involving improper error cleanup in xe_exec_queue_create_ioctl().
A Linux kernel drm/xe vulnerability related to improper error cleanup in xe_exec_queue_create_ioctl().
A Linux kernel vulnerability in the drm/xe component caused improper error cleanup in xe_exec_queue_create_ioctl(), leading to dangling pointer and use-after-free conditions when exec queue creation fails along certain error paths.
A Linux kernel drm/xe vulnerability related to improper error cleanup in xe_exec_queue_create_ioctl().
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