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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-63855

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

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)

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to < 8156e258025f2a22fcf7486c96848ac3cd3541ddaffected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to < 2c6fb056567efb49f8674108b86088a1cfaa86d0affected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to < 8f0ea4524dc71c6c9ec97f2711f46e12f624140faffected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to < 602d4c5872b25ddd4d82fb2025efb9a05b187bb3affected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to < 5a3c6f76cab164a5d803084908d7050f649ab7f9affected
  • 28c17d72072b7ce5cc13a527dcbfc045cc995e7d to < 4f317863a3ab212a027d8c8c3cc3af4e3fb95704affected

Linux Linux

Default version status: affected

  • 5.4affected
  • 0 to < 5.4unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.141 to ≤ 6.6.*unaffected
  • 6.12.91 to ≤ 6.12.*unaffected
  • 6.18.33 to ≤ 6.18.*unaffected
  • 7.0.10 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References