Tracker / CVE-2026-63938
CVE-2026-63938
Critical 9.3
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.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 6.11 → 6.12.93 |
| linux | linux_kernel · 6.13 → 6.18.35 |
| linux | linux_kernel · 6.19 → 7.0.12 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.