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CVE-2026-53703

Gstreamer1-plugins-ugly-free: gstreamer: out-of-bounds read in realmedia demuxer audio stream header parser

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • gstreamer1-plugins-ugly-free

    Version range not reported

  • gstreamer1-plugins-ugly-free

    Version range not reported

  • gstreamer1-plugins-ugly-free

    Version range not reported

  • gstreamer1-plugins-ugly-free

    Version range not reported

  • gstreamer1-plugins-ugly-free

    Version range not reported

  • gstreamer1-plugins-ugly-free

    Version range not reported

References 6

access.redhat.com

bugzilla.redhat.com