Riskcovery

CVE-2026-74448

drm/amdkfd: fix QID bit leak in pqm_create_queue()

State
Published
Severity
Not scored
Published
Aug 15, 2026
Updated
Aug 18, 2026
Reserved
Aug 15, 2026

Read the record on cve.org

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)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 0f88894aa628680747ae27760e5f627f901a435f to before 8924e2594a15bdbd07f8696770864366d787ab70Affected
  • c0ef1c8ef70bfa3487ea84f794d7a1f0fea0735d to before 2ff5bb3645c72b3690e70c513a62a86600c4632fAffected
  • fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 to before 5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3Affected
  • fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 to before 7c35bf94150d872e670a6632aa819d320279effbAffected
  • fddc45026311c05a5355fd34b9dc0a1d7eaef4a2 to before 38b73293f38658a4685ffcea666462024f858ad9Affected
  • 9d61e2b81f5fc90c87975879809346e7c90ea5f9Affected
  • d86ba913bbfd1afafacbfb750001ffc6bfe29da0Affected
  • 6.6.87 to before 6.6.151Affected
  • 6.12.23 to before 6.12.103Affected
  • 6.13.11 to before 6.14Affected
  • 6.14.2 to before 6.15Affected
LinuxLinux
  • 6.15Affected
  • before 6.15Not affected
  • 6.6.151 through 6.6.*Not affected
  • 6.12.103 through 6.12.*Not affected
  • 6.18.44 through 6.18.*Not affected
  • 7.1.8 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.