Security Advisory 2026-0027 (CVE-2026-XXXX pending)
| Summary | Out-of-bounds read in MXF demuxer temporal offset check |
| Date | 2026-05-11 |
| Affected Versions | GStreamer gst-plugins-bad < 1.28.3 |
| IDs | GStreamer-SA-2026-0027 CVE-2026-XXXX (pending) |
Details
Off-by-one bounds check error in the MXF demuxer (mxfdemux) when processing
reverse temporal offsets in index table segments. The demuxer used a > comparison
instead of >= when validating array access bounds, allowing a single element
past the end of the array to be read when processing crafted MXF files with
specific temporal offset configurations.
Impact
A malicious third party could trigger an out-of-bounds read by providing a crafted MXF file with invalid temporal offset values, potentially resulting in a crash or denial of service. Information disclosure is also possible as sensitive memory contents could be exposed.
Solution
The gst-plugins-bad 1.28.3 release addresses the issue. People using older versions of GStreamer should apply the patch and recompile.