7.8

CVE-2026-64388

smb/client: fix chown/chgrp with SMB3 POSIX Extensions

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version b326614ea2159ea5c835d320f261d05d080cd201
Version < 550cfb8a81181331d4d0f76ab75ee58a0bf41e3e
Status affected
Version b326614ea2159ea5c835d320f261d05d080cd201
Version < 760ef2c579c2609cf17fb1cd5392f64d42d43d33
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 4.18
Status affected
Version 0
Version < 4.18
Status unaffected
Version <= 7.1.*
Version 7.1.4
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.022
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/550cfb8a81181331d4d0f76ab75ee58a0bf41e3e
https://git.kernel.org/stable/c/760ef2c579c2609cf17fb1cd5392f64d42d43d33