smb/client: fix chown/chgrp with SMB3 POSIX Extensions (Linux Linux)

CVE-2026-64388
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 3 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership (chown) and group (chgrp) modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFS_MOUNT_CIFS_ACL or CIFS_MOUNT_MODE_FROM_SID were also explicitly set. Fix this by checking for posix_extensions in cifs_setattr_nounix() when updating UID and GID, ensuring that id_mode_to_cifs_acl() is called to map and set the ownership/group information on the server.

Faiblesses (CWE)

Références

Scores

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

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected b326614ea2159ea5c835d320f261d05d080cd201 < c0fe1118a1471d459f76c3e70ff2abbf784ce6bf ; affected b326614ea2159ea5c835d320f261d05d080cd201 < 6825a45f6b8ef76b0ee32649ec3d6e39ca143a18 ; affected b326614ea2159ea5c835d320f261d05d080cd201 < 27ead8c5418af6bfab711079fecb9414d78d4cae ; affected b326614ea2159ea5c835d320f261d05d080cd201 < 3eaec47518e126e6dcd1a48521d740278073f0ec ; affected b326614ea2159ea5c835d320f261d05d080cd201 < 550cfb8a81181331d4d0f76ab75ee58a0bf41e3e ; affected b326614ea2159ea5c835d320f261d05d080cd201 < 760ef2c579c2609cf17fb1cd5392f64d42d43d33
Linux · Linuxaffected 4.18 ; unaffected 0 < 4.18 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.57 ≤ 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