drm/amdkfd: fix QID bit leak in pqm_create_queue()
Summary
| CVE | CVE-2026-74448 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 13:17:49 UTC |
| Updated | 2026-08-18 07:16:54 UTC |
| 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) |
Risk And Classification
EPSS: 0.001680000 probability, percentile 0.065090000 (date 2026-08-17)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 0f88894aa628680747ae27760e5f627f901a435f 8924e2594a15bdbd07f8696770864366d787ab70 git | Not specified |
| CNA | Linux | Linux | affected c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d 2ff5bb3645c72b3690e70c513a62a86600c4632f git | Not specified |
| CNA | Linux | Linux | affected fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3 git | Not specified |
| CNA | Linux | Linux | affected fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 7c35bf94150d872e670a6632aa819d320279effb git | Not specified |
| CNA | Linux | Linux | affected fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 38b73293f38658a4685ffcea666462024f858ad9 git | Not specified |
| CNA | Linux | Linux | affected 9d61e2b81f5fc90c87975879809346e7c90ea5f9 git | Not specified |
| CNA | Linux | Linux | affected d86ba913bbfd1afafacbfb750001ffc6bfe29da0 git | Not specified |
| CNA | Linux | Linux | affected 6.6.87 6.6.151 semver | Not specified |
| CNA | Linux | Linux | affected 6.12.23 6.12.103 semver | Not specified |
| CNA | Linux | Linux | affected 6.13.11 6.14 semver | Not specified |
| CNA | Linux | Linux | affected 6.14.2 6.15 semver | Not specified |
| CNA | Linux | Linux | affected 6.15 | Not specified |
| CNA | Linux | Linux | unaffected 6.15 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.151 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.103 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.44 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.8 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.