CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's amdgpu driver, specifically in the queue management for the AMD GPU kernel driver. If the memory allocation fails during the creation of a queue, the system does not properly clear the associated queue identifier (QID), leading to a potential exhaustion of available queue slots over time. Organizations utilizing AMD GPUs in their Linux environments should prioritize this fix to prevent resource exhaustion and maintain system stability.
Original NVD 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)