CVE-2026-53689

Name	CVE-2026-53689
Description	libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfs_zdr_string in lib/libnfs-zdr.c.
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)
Debian Bugs	1139731

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libnfs (PTS)	bookworm, bullseye	4.0.0-1	vulnerable
	forky, sid, trixie	5.0.2-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libnfs	source	(unstable)	(unfixed)			1139731

[trixie] - libnfs <no-dsa> (Minor issue)
Fixed by: https://github.com/sahlberg/libnfs/commit/55c18ea33a83d667f79f0ef209c96895795c729f