Summary
The SMB/CIFS protocol is a standard file sharing protocol widely deployed on Microsoft Windows machines. The cifs-utils packages contain tools for mounting shares on Linux using the SMB/CIFS protocol. The tools in this package work in conjunction with support in the kernel to allow one to mount a SMB/CIFS share onto a client and use it as if it were a standard Linux file system.
Security Fix(es):
* cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall (CVE-2026-12505)
Bug Fix(es) and Enhancement(s):
* add sssd method for mapping SID to UID/GID in man page of mount.cifs [almalinux-8.10.z] (JIRA:AlmaLinux-41059)
* Update the mount.cifs man page to match the 3*echo_interval reconnection timeout (JIRA:AlmaLinux-80397)
* cifs-utils: regression with kerberos mount [almalinux-8.10.z] (JIRA:AlmaLinux-192933)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | cifs-utils | 7.0-5.el8_10 |
| AlmaLinux · 8 | cifs-utils-devel | 7.0-5.el8_10 |
| AlmaLinux · 8 | pam_cifscreds | 7.0-5.el8_10 |
Vulnerabilities 1
-
High 7.8
Cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall
A flaw was found in the cifs-utils package where the cifs.upcall helper fails to securely drop its root privileges before looking up user information inside a user-controlled environment. A local, low privileged attacker can exploit this by using a crafted re…