smb: server: fix use-after-free in smb2_open() (Linux Linux)

CVE-2026-43378
CRITICAL 9.8

En bref

Source
NVD
EPSS
EPSS 0.31 % · centile 24 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2_open() The opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is dereferenced after rcu_read_unlock(), creating a use-after-free window.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < e1b21e6066615e7d3d3a7aa2677e415e563fd7cc ; affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < b720c84087cb547f23ce03eab93568c1769e4556 ; affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 54b48ae83de8bb06e65079d96368efe359d4909c ; affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 8f5b1a7cb009a93c48e9e334a2f59a660f9afc07 ; affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 190e5f808e8058640b408ccfed25440b441a718a ; affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 1e689a56173827669a35da7cb2a3c78ed5c53680
Linux · Linuxaffected 5.15 ; unaffected 0 < 5.15 ; unaffected 6.1.167 ≤ 6.1.* ; unaffected 6.6.130 ≤ 6.6.* ; unaffected 6.12.78 ≤ 6.12.* ; unaffected 6.18.19 ≤ 6.18.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD