CVE-2025-21995

Summary

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

drm/sched: Fix fence reference count leak

The last_scheduled fence leaks when an entity is being killed and adding the cleanup callback fails.

Decrement the reference count of prev when dma_fence_add_callback() fails, ensuring proper balance.

[phasta: add git tag info for stable kernel]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2fdb8a8f07c2f1353770a324fd19b8114e4329ac < c76bd3c99293834de7d1dca5de536616d5655e38affected
LinuxLinux2fdb8a8f07c2f1353770a324fd19b8114e4329ac < 1135a9431160575466ea9ac37ebd756ecbe35fffaffected
LinuxLinux2fdb8a8f07c2f1353770a324fd19b8114e4329ac < 35399c84dcedd6d31448fb9e1336ef52673f2882affected
LinuxLinux2fdb8a8f07c2f1353770a324fd19b8114e4329ac < a952f1ab696873be124e31ce5ef964d36bce817faffected
LinuxLinux6.2affected
LinuxLinux0 < 6.2unaffected
LinuxLinux6.6.85 <= 6.6.*unaffected
LinuxLinux6.12.21 <= 6.12.*unaffected
LinuxLinux6.13.9 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References