CVE-2026-104715

Name	CVE-2026-104715
Description	A flaw was found in cifs-utils. This flaw allows an unprivileged local user to achieve privilege escalation. When a privileged service mounts a Common Internet File System (CIFS) share using a user-controlled credentials file, input values are not properly sanitized before being assembled into mount options. A local attacker can exploit this vulnerability to inject unauthorized mount options, allowing them to bypass permission checks and execute files with administrative (root) privileges.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-6567-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
cifs-utils (PTS)	bookworm	2:7.0-2	vulnerable
	trixie	2:7.4-1	vulnerable
	trixie (security)	2:7.4-1+deb13u2	fixed
	forky, sid	2:7.9-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
cifs-utils	source	trixie	2:7.4-1+deb13u1		DSA-6567-1
cifs-utils	source	(unstable)	2:7.9-1

Notes

Fixed by: https://git.samba.org/?p=cifs-utils.git;a=commit;h=d561eb914a389f6f2f009f13f0d09df0887bae72 (cifs-utils-7.9)
Fixed by: https://git.samba.org/?p=cifs-utils.git;a=commit;h=fa0ba5a155ef925bb7547cb4cdc36425a2f5b8f9 (cifs-utils-7.9)