CVE-2026-56968

Name	CVE-2026-56968
Description	GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.
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-6348-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gsasl (PTS)	bullseye	1.10.0-4+deb11u1	vulnerable
	bullseye (security)	1.10.0-4+deb11u2	vulnerable
	bookworm (security), bookworm	2.2.0-1+deb12u1	vulnerable
	trixie (security), trixie	2.2.2-1.1+deb13u2	fixed
	forky, sid	2.2.4-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gsasl	source	trixie	2.2.2-1.1+deb13u2		DSA-6348-1
gsasl	source	(unstable)	2.2.4-1

https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html