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: 2026-08-05 07:28 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:36673 0 None None None 2026-07-08 11:51:28 UTC
Red Hat Product Errata RHSA-2026:36674 0 None None None 2026-07-08 12:55:38 UTC
Red Hat Product Errata RHSA-2026:50688 0 None None None 2026-08-05 06:32:32 UTC
Red Hat Product Errata RHSA-2026:50691 0 None None None 2026-08-05 07:28:50 UTC

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.
Comment 1 errata-xmlrpc 2026-07-08 11:51:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:36673 https://access.redhat.com/errata/RHSA-2026:36673
Comment 2 errata-xmlrpc 2026-07-08 12:55:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:36674 https://access.redhat.com/errata/RHSA-2026:36674
Comment 5 errata-xmlrpc 2026-08-05 06:32:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:50688 https://access.redhat.com/errata/RHSA-2026:50688
Comment 6 errata-xmlrpc 2026-08-05 07:28:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:50691 https://access.redhat.com/errata/RHSA-2026:50691
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