CVE-2026-53704
Fixed in a distro release EPSS <1%CVSS 7.1
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.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 9 | gstreamer1-plugins-ugly-free | 1.22.12-6.el9_8.1 |
| Debian 12 | gst-plugins-ugly1.0 | no fix |
| Debian 13 | gst-plugins-ugly1.0 | no fix |
| Debian 14 | gst-plugins-ugly1.0 | 1.28.4-1 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-ugly-free | 0:1.26.7-2.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-ugly-free-debuginfo | 0:1.26.7-2.el10_2.1 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-ugly-free-debugsource | 0:1.26.7-2.el10_2.1 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-ugly-free | 0:1.22.12-6.el9_8.1 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-ugly-free-debuginfo | 0:1.22.12-6.el9_8.1 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-ugly-free-debugsource | 0:1.22.12-6.el9_8.1 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-ugly-free | 0:1.24.11-1.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-ugly-free-debuginfo | 0:1.24.11-1.el10_0.2 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-ugly-free-debugsource | 0:1.24.11-1.el10_0.2 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-ugly-free | 0:1.22.12-4.el9_6.1 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-ugly-free-debuginfo | 0:1.22.12-4.el9_6.1 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-ugly-free-debugsource | 0:1.22.12-4.el9_6.1 |
| Rocky Linux 9 | gstreamer1-plugins-ugly-free | 0:1.22.12-6.el9_8.1 |
| Ubuntu 25.10 | gst-plugins-ugly1.0 | no fix |
| Ubuntu Pro 16.04 LTS | gst-plugins-ugly1.0 | 1.8.3-1ubuntu0.1+esm2 |
| Ubuntu Pro 18.04 LTS | gst-plugins-ugly1.0 | 1.14.5-0ubuntu1~18.04.1+esm1 |
| Ubuntu Pro 20.04 LTS | gst-plugins-ugly1.0 | 1.16.2-2ubuntu0.1~esm1 |
| Ubuntu Pro 22.04 LTS | gst-plugins-ugly1.0 | 1.20.1-1ubuntu0.1~esm1 |
| Ubuntu Pro 24.04 LTS | gst-plugins-ugly1.0 | 1.24.1-1ubuntu0.1~esm1 |
| Ubuntu Pro 26.04 LTS | gst-plugins-ugly1.0 | 1.28.2-1ubuntu0.1~esm1 |