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CVE-2026-63852

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)
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:02da01fe604b2fd3e2b6091a7878c2ebe1e6eb7780ce401c3da5af7d7f850476
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.5"},{"lessThan":"6.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semv…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c12a5d35033c0640c57c10d7111c010c7b9c2c8e","status":"affected","version":"b889ef4ac98837838c38f7b9f72bba2f33ee367d","versionType":"git"},{"lessThan":"387b7c7667bd5c53549350ddad866d2fcf75a529","status":"affected","version":"b889ef4ac98837838c38f7b9f72bba2f33ee367d","versionType":"git"},{"lessThan":"9076a83e5adefd10dc5c967c7b8bde601c4c512a","status":"affected","version":"b889ef…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.5"},{"lessThan":"6.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semv…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c12a5d35033c0640c57c10d7111c010c7b9c2c8e","status":"affected","version":"b889ef4ac98837838c38f7b9f72bba2f33ee367d","versionType":"git"},{"lessThan":"387b7c7667bd5c53549350ddad866d2fcf75a529","status":"affected","version":"b889ef4ac98837838c38f7b9f72bba2f33ee367d","versionType":"git"},{"lessThan":"9076a83e5adefd10dc5c967c7b8bde601c4c512a","status":"affected","version":"b889ef…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/0177ac6141c8857130cf365369c74dee7b6b1f7f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/387b7c7667bd5c53549350ddad866d2fcf75a529"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/4532b52b34e4e4310386e6fdf6a643368599f522"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/9076a83e5adefd10dc5c967c7b8bde601c4c512a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/c12a5d35033c0640c57c10d7111c010c7b9c2c8e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:376a195d15298e4c09ffa0d3ea1b943fc2ab9fc6b08fae9e1bf2696bbba4171a · sha256:50c1f22cca0e4402… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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