CVE-2026-125707

Name	CVE-2026-125707
Description	A flaw was found in GStreamer's MXF demuxer. When an application processes a crafted MXF file, an off-by-one bounds check can allow a one-byte write past the logical end of a temporal offset array. This may corrupt memory and cause the application to crash. The extent of the impact has not been demonstrated by a runtime test.
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
gst-plugins-bad1.0 (PTS)	bookworm	1.22.0-4+deb12u7	vulnerable
	bookworm (security)	1.22.0-4+deb12u8	vulnerable
	trixie (security), trixie	1.26.2-3+deb13u3	vulnerable
	forky	1.28.8-1	fixed
	sid	1.28.9-1	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)	1.28.3-1

Notes

https://gstreamer.freedesktop.org/security/sa-2026-0027.html
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11582
Fixed by: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/53677b5c176f653014a6d164bd585d2815839e8d (1.28.3)