CVE-2026-89266

Name	CVE-2026-89266
Description	stb_vorbis through 1.22 contains a heap buffer overflow in start_decoder() where the codebook multiplicands allocation size is truncated from size_t to int. Attackers can craft a malicious Ogg Vorbis file with large entries and dimensions values to trigger out-of-bounds writes, causing process crashes or heap corruption.
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
libstb (PTS)	bookworm	0.0~git20220908.8b5f1f3+ds-1	vulnerable
	trixie	0.0~git20241109.5c20573+ds-1	vulnerable
	forky, sid	0.0~git20250907.fede005+ds-1	vulnerable

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

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

Notes

[trixie] - libstb <no-dsa> (Minor issue)
https://github.com/nothings/stb/issues/1928
https://github.com/nothings/stb/issues/1933
https://github.com/nothings/stb/issues/1947