CVE-2026-64380

8.2 Élevée

Publiée le 25/07/2026 à 12:17 · Modifiée le 19/10/2026 à 23:17 · Modifiée · Source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: harden POSIX SID length parsing posix_info_sid_size() reads sid[1] to obtain the subauthority count, but its existing boundary check still accepts buffers with only one remaining byte. Require two bytes before reading sid[1] so all client paths that reuse the helper reject truncated POSIX SIDs safely.

Traduire en français

Produits concernés

Linux
Linux linux kernel

Scores CVSS

Version	Score	Source	Vecteur
3.1	8.2 Élevée	416baaa9-dc9f-4396-8d5f-8c081fb06d67	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H`

Faiblesses (CWE)

CWE-125

Références

https://git.kernel.org/stable/c/0de5b8e76847f5de26f364a82c6602c4881c30da Patch
https://git.kernel.org/stable/c/171605aed68380c2fa75dff9b3a1ed427c50065b Patch
https://git.kernel.org/stable/c/4213c1208978483021d7d125c131de3985d38f61 Patch
https://git.kernel.org/stable/c/427eb7eb46425fec845a43e861f3d6e2899cae59 Patch
https://git.kernel.org/stable/c/46a84715a015cb48e1b9c219dc88c03d8a541ea4 Patch
https://git.kernel.org/stable/c/7ad2bcf2441430bb2e918fb3ef9a90d775a6e422 Patch
https://git.kernel.org/stable/c/86c5d470f5d42e61123b2f4b4f0b91f4eee5b980 Patch
https://git.kernel.org/stable/c/96e889bc1e759c83f25093e8c2f3da31b4973f30 Patch

Ailleurs

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