Bug 2487613 (CVE-2026-53703) - CVE-2026-53703 gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer audio stream header parser
Summary: CVE-2026-53703 gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in...
Keywords:
Status: NEW
Alias: CVE-2026-53703
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2488944
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-10 16:14 UTC by OSIDB Bzimport
Modified: 2026-06-15 16:37 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-06-10 16:14:22 UTC 
GStreamer RealMedia demuxer audio stream header OOB read. In gst_rmdemux_parse_mdpr(), audio header versions 4 and 5 read codec parameters at fixed byte offsets (22-69 for v4, 22-74 for v5) without bounds checking against the MDPR chunk length. OOB-read values control downstream buffer allocation, codec selection, and caps negotiation. No fix available; upstream recommends rmdemux rewrite. Reported via PSIRTSUPT-7239 by Tianshuo Han.
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