Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix QID bit leak in pqm_create_queue() When MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during the first queue creation for a process, pqm_create_queue() returns early via 'return retval' without going through the err_create_queue cleanup label. This means clear_bit(*qid, pqm->queue_slot_bitmap) is never called, leaving the reserved QID bit permanently set in queue_slot_bitmap. Over time this leaks QID slots, potentially exhausting all available queue slots. Fix this by replacing 'return retval' with 'goto err_allocate_pqn' so that clear_bit() is always called on the error path without touching the uninitialized pqn pointer. AILIKFD-813 (cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)
References
- https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f
- https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9
- https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3
- https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb
- https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70
FAQ
What is CVE-2026-74448?
CVE-2026-74448 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix QID bit leak in pqm_create_queue() When MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during the first...
How severe is CVE-2026-74448?
CVSS scoring is not yet available for CVE-2026-74448. Check NVD for updates.
Is there a patch for CVE-2026-74448?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.