CVE-2025-21962

cifs: Fix integer overflow while processing closetimeo mount option

CVSS 5.5 MEDIUMEPSS 0.2%CWE-190

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 5.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

01 abr 2025Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing closetimeo mount option User-provided mount parameter closetimeo of type u32 is intended to have an upper limit, but before it is validated, the value is converted from seconds to jiffies which can lead to an integer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Produtos afetados

Linux · Linux

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Referências

https://git.kernel.org/stable/c/1c46673be93dd2954f44fe370fb4f2b8e6214224 https://git.kernel.org/stable/c/513f6cf2e906a504b7ab0b62b2eea993a6f64558 https://git.kernel.org/stable/c/6c13fcb7cf59ae65940da1dfea80144e42921e53 https://git.kernel.org/stable/c/9968fcf02cf6b0f78fbacf3f63e782162603855a https://git.kernel.org/stable/c/b24edd5c191c2689c59d0509f0903f9487eb6317 https://git.kernel.org/stable/c/d5a30fddfe2f2e540f6c43b59cf701809995faef https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html