CVE-2026-49346

Name	CVE-2026-49346
Description	libde265 is an open source implementation of the h.265 video codec. Prior to version 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit depth causes a signed integer overflow in `de265_image_get_buffer()` (`libde265/image.cc:128`). The overflow wraps the plane allocation size to a small value (~1 KB), but the subsequent `fill_image()` call computes the real size using `size_t`, writing ~4 GB into the undersized heap buffer. Version 1.1.0 patches the issue.
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	1140431

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libde265 (PTS)	bullseye	1.0.11-0+deb11u3	vulnerable
	bullseye (security)	1.0.11-0+deb11u4	vulnerable
	bookworm	1.0.11-1+deb12u2	vulnerable
	trixie	1.0.15-1	vulnerable
	forky, sid	1.0.18-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libde265	source	(unstable)	(unfixed)			1140431

Notes

https://github.com/strukturag/libde265/security/advisories/GHSA-vv8h-932h-7r86
Fixed by: https://github.com/strukturag/libde265/commit/8a1b5cf212f78e1c77cb46eb5d56e492a9336eb8 (v1.1.0)