CVE-2026-63940

9.3 Critique

Publiée le 19/07/2026 à 18:17 · Modifiée le 21/10/2026 à 15:19 · Analyse NVD en cours · Source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Description

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.

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Produits concernés

Linux

Scores CVSS

Version	Score	Source	Vecteur
3.1	9.3 Critique	416baaa9-dc9f-4396-8d5f-8c081fb06d67	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

Faiblesses (CWE)

CWE-190

Références

https://git.kernel.org/stable/c/2254972d4d69e279ba4e87bf0968eb08ad0d3c92
https://git.kernel.org/stable/c/3988bd2723de407ae90fa7a6f6029b4e60238c58
https://git.kernel.org/stable/c/3b6035bc6bff20e89752ce4358bc4c9a9d5883f2
https://git.kernel.org/stable/c/bbd3a27e4f99fdcad82d12d79c04a95dff1ff70b
https://git.kernel.org/stable/c/c30cde934c7813b4e3069765dac64ce3d31e34f2

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories