CVE-2026-63938
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
KVM: SEV: Check PSC request indices against the actual size of the buffer
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 9b54e248d2644be71cb394eb85f31ad99e023a05 | affected | git | 5198f70c09a5f6e9e5f5a0a2c6b388f24294b176 | Unavailable | None listed |
| 9b54e248d2644be71cb394eb85f31ad99e023a05 | affected | git | 75c8d1d7291268b479794fba5808971dc2f5eaf3 | Unavailable | None listed |
| 9b54e248d2644be71cb394eb85f31ad99e023a05 | affected | git | 505a3b94535583e4265360e2621734e355ef263d | Unavailable | None listed |
| 9b54e248d2644be71cb394eb85f31ad99e023a05 | affected | git | 121d88de56bc5c0ba0ce2f6381af67f948a7e7c1 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.11 | Unavailable | None listed |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |