CVE-2025-68313 affecting package kernel 6.6.157.1-1
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. ]
- Products
- kernel
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-68313
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 17:43 UTC · Revision 1
Source evidence
CVE-2025-68313 affecting package kernel 6.6.157.1-1
core-osv · Original sourcePublished 16 Dec 2025, 16:16 UTC
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. ]
osv:AZL-72628
kernel
Fixed versions: Not specified
Complete source record
{
"id": "221281bb074f2a98a0d0712351339c80aa89725f8f6b909bdb5b3583dcbe8a0b",
"url": "https://osv.dev/vulnerability/AZL-72628",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-68313 affecting package kernel 6.6.157.1-1",
"summary": "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. ]",
"evidence": "osv:AZL-72628",
"products": [
{
"name": {
"value": "kernel",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "AZL-72628",
"aliases": [
"AZL-72628"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.6.157.1-1"
}
]
}
],
"package": {
"name": "kernel",
"purl": "pkg:rpm/azure-linux/kernel",
"ecosystem": "Azure Linux:3"
},
"database_specific": {
"source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-72628.json"
}
}
],
"modified": "2026-10-22T05:35:55Z",
"provider": "osv",
"upstream": [
"CVE-2025-68313"
],
"references": [
"https://nvd.nist.gov/vuln/detail/CVE-2025-68313"
]
},
"related_cves": [
{
"value": "CVE-2025-68313",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 404467,
"published_at": "2025-12-16T16:16:10+00:00"
}