Vulnerability in GStreamer RealMedia Demuxer Affects gst-plugins-ugly by Red Hat
CVE-2026-53704

7.1HIGH

Key Information:

Vendor

Red Hat
Status
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 10
Vendor
CVE Published:
15 June 2026

What is CVE-2026-53704?

An issue exists in the RealMedia demuxer of the GStreamer gst-plugins-ugly package. The vulnerability arises when processing RealMedia files that contain a specially crafted FILEINFO metadata section. The demuxer's method for parsing variable-name and variable-value pairs does not adequately validate offsets, resulting in potential infinite loops or crashes. Maliciously constructed RealMedia files might cause the application to hang or allow access to adjacent memory contents, which could lead to security risks.

Affected Version(s)

Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.24.11-1.el10_0.2

Red Hat Enterprise Linux 9 0:1.22.12-6.el9_8.1

Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.22.12-4.el9_6.1

References

https://access.redhat.com/errata/RHSA-2026:36674
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:50688
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:50691
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Tianshuo Han for reporting this issue.
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