CVE-2026-0965

Name	CVE-2026-0965
Description	A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.
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-6410-1
Debian Bugs	1127693

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libssh (PTS)	bullseye	0.9.8-0+deb11u1	vulnerable
	bullseye (security)	0.9.8-0+deb11u2	vulnerable
	bookworm	0.10.6-0+deb12u2	vulnerable
	bookworm (security)	0.10.6-0+deb12u1	vulnerable
	trixie	0.11.2-1+deb13u1	vulnerable
	trixie (security)	0.11.5-0+deb13u1	fixed
	forky, sid	0.12.2-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libssh	source	trixie	0.11.5-0+deb13u1		DSA-6410-1
libssh	source	(unstable)	0.12.0-1			1127693

Notes

[bookworm] - libssh <no-dsa> (Minor issue)
[bullseye] - libssh <postponed> (Minor issue)
https://www.libssh.org/security/advisories/CVE-2026-0965.txt
Fixed by: https://git.libssh.org/projects/libssh.git/commit/?id=bf390a042623e02abc8f421c4c5fadc0429a8a76 (libssh-0.11.4)