Riskcovery

CVE-2026-63852

drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring

State
Published
Severity
7.8 High
Published
Jul 19, 2026
Updated
Oct 19, 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 v4.0.3 enc ring

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

(cherry picked from commit ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa)

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
  • b889ef4ac98837838c38f7b9f72bba2f33ee367d to before c12a5d35033c0640c57c10d7111c010c7b9c2c8eAffected
  • b889ef4ac98837838c38f7b9f72bba2f33ee367d to before 387b7c7667bd5c53549350ddad866d2fcf75a529Affected
  • b889ef4ac98837838c38f7b9f72bba2f33ee367d to before 9076a83e5adefd10dc5c967c7b8bde601c4c512aAffected
  • b889ef4ac98837838c38f7b9f72bba2f33ee367d to before 0177ac6141c8857130cf365369c74dee7b6b1f7fAffected
  • b889ef4ac98837838c38f7b9f72bba2f33ee367d to before 4532b52b34e4e4310386e6fdf6a643368599f522Affected
LinuxLinux
  • 6.5Affected
  • before 6.5Not 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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