Bug 2509700

Summary:	CVE-2026-5056 gstreamer1: GStreamer: Arbitrary code execution via stack-based buffer overflow in qtdemux [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Srikanth Balasubramanian <sbalasub>
Component:	gstreamer1	Assignee:	Wim Taymans <wtaymans>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	45	CC:	dominik, gwync, multimedia-sig, wtaymans
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["a1933dd0-d89f-437b-8253-080849ee920a"]}
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:
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Bug Blocks:	2508623

Description Srikanth Balasubramanian 2026-07-31 07:02:11 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the parsing of UncompressedFrameConfigBox structures. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29392.

Comment 1 Aoife Moloney 2026-08-17 15:44:02 UTC

This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.