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Vulnerabilities
Vulnerability

CVE-2026-63940

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: Ignore Port I/O requests of length '0' Explicitly ignore Port I/O requests of length '0' (or count '0'), so that setting up the software scratch area (and other code) doesn't have to worry about underflowing the length, and to allow for WARNing on trying to configure the scratch area with len==0.

Coverage 5

Advisories and references