x86/CPU/AMD: Add RDSEED fix for Zen5
In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Add RDSEED fix for Zen5 There's an issue with RDSEED's 16-bit and 32-bit register output variants on Zen5 which return a random value of 0 "at a rate inconsistent with randomness while incorrectly signaling success (CF=1)". Search the web for AMD-SB-7055 for more detail. Add a fix glue which checks microcode revisions. [ bp: Add microcode revisions checking, rewrite. ]
CVE-2025-68313
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-2025-68313
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": "3e4147f33f8b647775357bae0248b9a2aeebfcd2",
"lessThan": "e980de2ff109dacb6d9d3a77f01b27c467115ecb",
"versionType": "git"
},
{
"status": "affected",
"version": "3e4147f33f8b647775357bae0248b9a2aeebfcd2",
"lessThan": "36ff93e66d0efc46e39fab536a9feec968daa766",
"versionType": "git"
},
{
"status": "affected",
"version": "3e4147f33f8b647775357bae0248b9a2aeebfcd2",
"lessThan": "607b9fb2ce248cc5b633c5949e0153838992c152",
"versionType": "git"
},
{
"status": "affected",
"version": "5953e7a89966fc5a42124a08ba33a9c57ba5173c",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.156",
"lessThan": "6.7",
"versionType": "semver"
}
],
"programFiles": [
"arch/x86/kernel/cpu/amd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver",
"lessThanOrEqual": "6.17.*"
},
{
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/x86/kernel/cpu/amd.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-68313
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30739 · Revision 1
- Added to Heist Feed
- Publisher date