A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade gstreamer1-plugins-ugly-free | Jul 9, 2026 | Jul 8, 2026 |
| Freebsd | — | Upgrade gstreamer1-plugins-goodUpgrade gstreamer1-libavUpgrade gstreamer1-plugins-uglyUpgrade gstreamer1-pluginsUpgrade gstreamer1-plugins-bad | Jun 30, 2026 | Jun 29, 2026 |
| Redhat_linux | — | Upgrade gstreamer1-plugins-ugly-freeUpgrade gstreamer1-plugins-ugly-free-debugsourceUpgrade gstreamer1-plugins-ugly-free-debuginfo | Jul 10, 2026 | Jun 12, 2026 |
| Rocky_linux | — | Upgrade gstreamer1-plugins-ugly-freeUpgrade gstreamer1-plugins-ugly-free-debugsourceUpgrade gstreamer1-plugins-ugly-free-debuginfo | Jul 13, 2026 | Jul 10, 2026 |
| Ubuntu | — | Upgrade gstreamer1.0-plugins-ugly (Ubuntu Pro) | Oct 12, 2026 | Oct 7, 2026 |
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