A vulnerability was found in the GStreamer RealMedia demuxer (gst-plugins-ugly). When processing a RealMedia (.rm) file, the demuxer parses MDPR (media properties) chunks to configure audio streams. For audio stream header versions 4 and 5, the parser reads fields such as codec type, packet size, sample rate, channel count, and extra codec data length from fixed offsets within the chunk without first checking that the chunk contains enough data. If a malicious file provides an MDPR chunk that is too small to contain a complete audio stream header, the parser reads beyond the end of the buffer. This can cause the application to crash. In some cases, bytes read past the buffer boundary may be incorporated into stream metadata, which could result in limited information disclosure.
CVSS Details
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade gstreamer1-plugins-ugly-free | Jul 9, 2026 | Jul 8, 2026 |
| Freebsd | — | Upgrade gstreamer1-libavUpgrade gstreamer1-pluginsUpgrade gstreamer1-plugins-uglyUpgrade gstreamer1-plugins-badUpgrade gstreamer1-plugins-good | Jun 30, 2026 | Jun 29, 2026 |
| Redhat_linux | — | Upgrade gstreamer1-plugins-ugly-free-debugsourceUpgrade gstreamer1-plugins-ugly-freeUpgrade gstreamer1-plugins-ugly-free-debuginfo | Jul 10, 2026 | Jun 12, 2026 |
| Rocky_linux | — | Upgrade gstreamer1-plugins-ugly-free-debugsourceUpgrade gstreamer1-plugins-ugly-freeUpgrade gstreamer1-plugins-ugly-free-debuginfo | Jul 13, 2026 | Jul 10, 2026 |
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