drm/amdgpu/vcn: set no_user_fence for VCN v2.0 enc/dec rings
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)
CVE-2026-63856
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-63856
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "1b61de45dfaff00b627e47349a019658e39268b9",
"lessThan": "f264019be80de79f84f464846451445923bffea0",
"versionType": "git"
},
{
"status": "affected",
"version": "1b61de45dfaff00b627e47349a019658e39268b9",
"lessThan": "5e777bc4cbe928ac0fd95e368fee1540f2ce4db2",
"versionType": "git"
},
{
"status": "affected",
"version": "1b61de45dfaff00b627e47349a019658e39268b9",
"lessThan": "ac06ce5cac9e711281585d09d00c6efcd9b86396",
"versionType": "git"
},
{
"status": "affected",
"version": "1b61de45dfaff00b627e47349a019658e39268b9",
"lessThan": "c71aecae98e42dcf2baf462df50b3a2cf1a93fe4",
"versionType": "git"
},
{
"status": "affected",
"version": "1b61de45dfaff00b627e47349a019658e39268b9",
"lessThan": "8d80b293b41fcb5e9396db93e788b0f4ebcbafb7",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.141",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.91",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.33",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.10",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-63856
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40860 · Revision 1
- Added to Heist Feed
- Publisher date