Detections
Analytics
CVE-2026-63938
critical
Description
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.
References
https://git.kernel.org/stable/c/75c8d1d7291268b479794fba5808971dc2f5eaf3
https://git.kernel.org/stable/c/5198f70c09a5f6e9e5f5a0a2c6b388f24294b176
https://git.kernel.org/stable/c/505a3b94535583e4265360e2621734e355ef263d
https://git.kernel.org/stable/c/121d88de56bc5c0ba0ce2f6381af67f948a7e7c1