PT-2026-61257 · Linux · Linux

CVE-2026-63940 · Publicado 2026-07-19 · Atualizado 2026-07-19

Mitre

CVSS v3.1

9.3

Crítica

Vetor base

AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Correção

Identificadores relacionados

CVE-2026-63940

Produtos afetados

Linux

Referências · 5

• https://git.kernel.org/stable/c/3b6035bc6bff20e89752ce4358bc4c9a9d5883f2 · Nota
• https://git.kernel.org/stable/c/2254972d4d69e279ba4e87bf0968eb08ad0d3c92 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-63940 · Nota de Segurança
• https://git.kernel.org/stable/c/3988bd2723de407ae90fa7a6f6029b4e60238c58 · Nota
• https://git.kernel.org/stable/c/c30cde934c7813b4e3069765dac64ce3d31e34f2 · Nota