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):
* cifs-utils: regression with kerberos mount [rhel-9.8.z] (JIRA:Rocky Linux-192982)
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 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 9 | cifs-utils | 0:7.6-2.el9_8 |
Vulnerabilities 1
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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…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2489805