CVE-2026-43379

9.8 Critique

Publiée le 08/05/2026 à 17:16 · Modifiée le 17/06/2026 à 12:49 · Analysée par le NVD · Source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close() opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is being accessed after rcu_read_unlock() has been called. This creates a race condition where the memory could be freed by a concurrent writer between the unlock and the subsequent pointer dereferences (opinfo->is_lease, etc.), leading to a use-after-free.

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Produits concernés

Linux
Linux linux kernel

Scores CVSS

Version	Score	Source	Vecteur
3.1	9.8 Critique	416baaa9-dc9f-4396-8d5f-8c081fb06d67	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Faiblesses (CWE)

CWE-416

Références

https://git.kernel.org/stable/c/960699317d39f46611f4ebeb69edc567c1f4e6b6 Patch
https://git.kernel.org/stable/c/b3568347c51c46e2cabc356bc34676df98296619 Patch
https://git.kernel.org/stable/c/bf4d66d72e4a9e268c1012c331ce9eaedb5e2086 Patch
https://git.kernel.org/stable/c/dbbd328cf58261ca239756fe1c0d10c9518d3399 Patch
https://git.kernel.org/stable/c/eac3361e3d5dd8067b3258c69615888eb45e9f25 Patch

Ailleurs

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