Riskcovery

CVE-2026-63856

drm/amdgpu/vcn: set no_user_fence for VCN v2.0 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 v2.0 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 e2b5499fca55f1a32960a311bbb62e35891eaf73)

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
  • 1b61de45dfaff00b627e47349a019658e39268b9 to before bcb972496f189edbf56a18b14f9b4831fd127ab8Affected
  • 1b61de45dfaff00b627e47349a019658e39268b9 to before f264019be80de79f84f464846451445923bffea0Affected
  • 1b61de45dfaff00b627e47349a019658e39268b9 to before 5e777bc4cbe928ac0fd95e368fee1540f2ce4db2Affected
  • 1b61de45dfaff00b627e47349a019658e39268b9 to before ac06ce5cac9e711281585d09d00c6efcd9b86396Affected
  • 1b61de45dfaff00b627e47349a019658e39268b9 to before c71aecae98e42dcf2baf462df50b3a2cf1a93fe4Affected
  • 1b61de45dfaff00b627e47349a019658e39268b9 to before 8d80b293b41fcb5e9396db93e788b0f4ebcbafb7Affected
LinuxLinux
  • 5.3Affected
  • before 5.3Not 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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