CVE-2025-3887

Name	CVE-2025-3887
Description	GStreamer H265 Codec Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of H265 slice headers. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26596.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1106285

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gst-plugins-bad1.0 (PTS)	bullseye (security), bullseye	1.18.4-3+deb11u4	vulnerable
	bookworm, bookworm (security)	1.22.0-4+deb12u5	vulnerable
	sid, trixie	1.26.1-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gst-plugins-bad1.0	source	(unstable)	1.26.1-1			1106285

Notes

https://gstreamer.freedesktop.org/security/sa-2025-0001.html
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/d0e18d6353e4e448ccf3b06a967b394e664dd0b5 (main)
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/b33ba2f264c8e39c7794e7452b7b57d48fab3f13 (main)
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/5463f0e09768ca90aa8c58357c1f4c645db580db (1.26.1)
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/bcaab3609805ea10fb3d9ac0c9d947b4c3563948 (1.26.1)
https://www.zerodayinitiative.com/advisories/ZDI-25-267/