CVE-2026-22801

Name	CVE-2026-22801
Description	LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54.
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	1125444

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libpng1.6 (PTS)	bullseye	1.6.37-3	vulnerable
	bullseye (security)	1.6.37-3+deb11u1	vulnerable
	bookworm, bookworm (security)	1.6.39-2+deb12u1	vulnerable
	trixie (security), trixie	1.6.48-1+deb13u1	vulnerable
	forky, sid	1.6.53-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libpng1.6	source	(unstable)	(unfixed)			1125444

Notes

https://github.com/pnggroup/libpng/security/advisories/GHSA-vgjq-8cw5-ggw8
Fixed by: https://github.com/pnggroup/libpng/commit/cf155de014fc6c5cb199dd681dd5c8fb70429072