CVE-2026-6069

Name	CVE-2026-6069
Description	NASM’s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when `slen` exceeds the buffer capacity.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
nasm (PTS)	bullseye	2.15.05-1	vulnerable
	bookworm	2.16.01-1	vulnerable
	trixie	2.16.03-1	vulnerable
	forky, sid	3.01-1	vulnerable

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

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

https://github.com/netwide-assembler/nasm/issues/217