x86/CPU/AMD: Add RDSEED fix for Zen5
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.7, 6.12.58, 6.17.8
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
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. ]
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 3e4147f33f8b647775357bae0248b9a2aeebfcd2 · fixed in e980de2ff109dacb6d9d3a77f01b27c467115ecb; From 3e4147f33f8b647775357bae0248b9a2aeebfcd2 · fixed in 36ff93e66d0efc46e39fab536a9feec968daa766; From 3e4147f33f8b647775357bae0248b9a2aeebfcd2 · fixed in 607b9fb2ce248cc5b633c5949e0153838992c152; From 6.6.156 · fixed in 6.7
- Linux Linux
6.8
- KernelLinux
From 6.8.0 · fixed in 6.12.58; From 6.13.0 · fixed in 6.17.8