CVE-2026-74448
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)
How to fix
- Linux Linux8924e2594a15bdbd07f8696770864366d787ab70, 2ff5bb3645c72b3690e70c513a62a86600c4632f, 5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3, 7c35bf94150d872e670a6632aa819d320279effb, 38b73293f38658a4685ffcea666462024f858ad9, 6.6.151, 6.12.103, 6.14, 6.15 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 0f88894aa628680747ae27760e5f627f901a435f ≤ v < 8924e2594a15bdbd07f8696770864366d787ab70, c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d ≤ v < 2ff5bb3645c72b3690e70c513a62a86600c4632f, fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 ≤ v < 5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3, fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 ≤ v < 7c35bf94150d872e670a6632aa819d320279effb, fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 ≤ v < 38b73293f38658a4685ffcea666462024f858ad9, 9d61e2b81f5fc90c87975879809346e7c90ea5f9, d86ba913bbfd1afafacbfb750001ffc6bfe29da0, 6.6.87 ≤ v < 6.6.151, 6.12.23 ≤ v < 6.12.103, 6.13.11 ≤ v < 6.14, 6.14.2 ≤ v < 6.15, 6.15 | 8924e2594a15bdbd07f8696770864366d787ab70, 2ff5bb3645c72b3690e70c513a62a86600c4632f, 5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3, 7c35bf94150d872e670a6632aa819d320279effb, 38b73293f38658a4685ffcea666462024f858ad9, 6.6.151, 6.12.103, 6.14, 6.15 |
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