CVE-2026-63940

Vendor

Linux kernel

Product

Linux kernel

EPSS

0.008 (p57)

Exposure class

Operating system

Every item in the archive that references this CVE, highest rank first. Headlines open the publisher.

1. 46
   Ubuntu notice Ubuntu 2h ago

   Linux kernel (FIPS) vulnerabilities

   Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - x86 architecture; - Hardware monitoring…

   CVE-2025-21656CVE-2026-63940CVE-2026-74350+2 more Canonical Linux kernel
2. 28
   CVE NVD 19 Jul 2026

   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…

   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…

   Fix available CVE-2026-63940 Linux kernel
3. 20
   Advisory MSRC 21 Jul 2026

   CVE-2026-63940 KVM: SEV: Ignore Port I/O requests of length '0'

   Information published.

   CVE-2026-63940 Microsoft