🛡️ CVE-2025-40191 — kernel

⚪ Unknown ✅ No Known Exploit NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

drm/amdkfd: Fix kfd process ref leaking when userptr unmapping

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Fix kfd process ref leaking when userptr unmapping

kfd_lookup_process_by_pid hold the kfd process reference to ensure it

doesn't get destroyed while sending the segfault event to user space.

Calling kfd_lookup_process_by_pid as function parameter leaks the kfd

process refcount and miss the NULL pointer check if app process is

already destroyed.

Affected software

CVE-2025-40191 is recorded against 2 packages.

  • kernel (from 6.16.0 up to 6.17.4)
  • unknown

Timeline and source

Published on 12 November 2025 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2025-40191 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-11-12
Updated 2026-08-12
Modified 2026-07-15
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 6.16.0 6.17.4
unknown — —

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