KVM: SEV: Check PSC request indices against the actual size of the buffer
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.12.93, 6.18.35, 7.0.12
- 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: KVM: SEV: Check PSC request indices against the actual size of the buffer When processing Page State Change (PSC) requests, validate the PSC buffer against the effective size of the scratch area, which could be less than the maximum size if the guest provided a pointer that isn't exactly at the start of the GHCB shared buffer.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 9b54e248d2644be71cb394eb85f31ad99e023a05 · fixed in 5198f70c09a5f6e9e5f5a0a2c6b388f24294b176; From 9b54e248d2644be71cb394eb85f31ad99e023a05 · fixed in 75c8d1d7291268b479794fba5808971dc2f5eaf3; From 9b54e248d2644be71cb394eb85f31ad99e023a05 · fixed in 505a3b94535583e4265360e2621734e355ef263d; From 9b54e248d2644be71cb394eb85f31ad99e023a05 · fixed in 121d88de56bc5c0ba0ce2f6381af67f948a7e7c1
- Linux Linux
6.11
- KernelLinux
From 6.11.0 · fixed in 6.12.93; From 6.13.0 · fixed in 6.18.35; From 6.19.0 · fixed in 7.0.12