GStreamer-SA-2026-0022
CVE Information
Details
Heap buffer overflow in the Matroska (MKV) demuxer when calculating decompressed buffer sizes for bz2-compressed tracks. The issue occurs due to missing parentheses in the buffer size calculation, causing incorrect memory allocation and potential out-of-bounds writes.
Impact
A malicious third party could trigger a heap buffer overflow by providing a crafted Matroska file with bz2-compressed data. This could result in application crash or arbitrary code execution.
Solution
The gst-plugins-good 1.28.2 release addresses the issue. People using older versions of GStreamer should apply the patch and recompile.
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11248.patch