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CVE-2026-63856

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)
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e0d76f6c6fa2127159bd7f8f2b288af4f32694383a257c9a67cc37c0eb78f228
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_v2_0.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.3"},{"lessThan":"5.3","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":"semver…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f264019be80de79f84f464846451445923bffea0","status":"affected","version":"1b61de45dfaff00b627e47349a019658e39268b9","versionType":"git"},{"lessThan":"5e777bc4cbe928ac0fd95e368fee1540f2ce4db2","status":"affected","version":"1b61de45dfaff00b627e47349a019658e39268b9","versionType":"git"},{"lessThan":"ac06ce5cac9e711281585d09d00c6efcd9b86396","status":"affected","version":"1b61de45…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.3"},{"lessThan":"5.3","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":"semver…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f264019be80de79f84f464846451445923bffea0","status":"affected","version":"1b61de45dfaff00b627e47349a019658e39268b9","versionType":"git"},{"lessThan":"5e777bc4cbe928ac0fd95e368fee1540f2ce4db2","status":"affected","version":"1b61de45dfaff00b627e47349a019658e39268b9","versionType":"git"},{"lessThan":"ac06ce5cac9e711281585d09d00c6efcd9b86396","status":"affected","version":"1b61de45…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /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:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/5e777bc4cbe928ac0fd95e368fee1540f2ce4db2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/8d80b293b41fcb5e9396db93e788b0f4ebcbafb7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/ac06ce5cac9e711281585d09d00c6efcd9b86396"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/c71aecae98e42dcf2baf462df50b3a2cf1a93fe4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/f264019be80de79f84f464846451445923bffea0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:af6ff6b73a65b8a0c436eb9f7e491da4c9b59093c43e3c6d2cdd2b168fd24b14 · sha256:662f9248077962d0… · /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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