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Vulnerabilities
Vulnerability

CVE-2026-63938

Reference data from vuln.mlab.sh, coverage from our own index.

CVSS
9.3 Critical
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
0.19%
Risk score
7.6
Published
2026-07-19
Status
Awaiting Analysis

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.

Coverage 5

Advisories and references