Riskcovery

CVE-2026-63855

drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings

State
Published
Severity
7.8 High
Published
Jul 19, 2026
Updated
Oct 30, 2026
Reserved
Jul 19, 2026

Read the record on cve.org

Description

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

drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings

VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences.

(cherry picked from commit efc9dd5590894109bce9a0bfe1fa5592dd6b20b1)

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

  • CWE-20 Improper Input Validation

Affected Products

ProductVersions
LinuxLinux
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to before 8156e258025f2a22fcf7486c96848ac3cd3541ddAffected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to before 2c6fb056567efb49f8674108b86088a1cfaa86d0Affected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to before 8f0ea4524dc71c6c9ec97f2711f46e12f624140fAffected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to before 602d4c5872b25ddd4d82fb2025efb9a05b187bb3Affected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to before 5a3c6f76cab164a5d803084908d7050f649ab7f9Affected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to before 4f317863a3ab212a027d8c8c3cc3af4e3fb95704Affected
LinuxLinux
  • 5.4Affected
  • before 5.4Not affected
  • 6.1.191 through 6.1.*Not affected
  • 6.6.141 through 6.6.*Not affected
  • 6.12.91 through 6.12.*Not affected
  • 6.18.33 through 6.18.*Not affected
  • 7.0.10 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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