CVE-2026-88371

Name	CVE-2026-88371
Description	ZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function. When processing specially crafted Code 128 input, decode_e() can return -1 for an invalid edge pattern, and decode6() subsequently left-shifts this negative signed value while constructing the edge signature. The operation invokes undefined behavior and can terminate trap-mode UBSan builds with SIGILL, resulting in denial of service.
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	1149058

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
zbar (PTS)	bookworm, bookworm (security)	0.23.92-7+deb12u1	vulnerable
	trixie	0.23.93-8	vulnerable
	forky, sid	0.23.93-10	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
zbar	source	(unstable)	(unfixed)	unimportant		1149058

https://github.com/mchehab/zbar/issues/336
Negligible security impact