Bug 2447490 (CVE-2026-2920)

Summary:	CVE-2026-2920 GStreamer: GStreamer: Arbitrary code execution via ASF file processing
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Doc Text:	A flaw was found in GStreamer. This heap-based buffer overflow vulnerability in the ASF Demuxer component allows a remote attacker to execute arbitrary code. The issue arises from insufficient validation of user-supplied data length when processing stream headers within ASF (Advanced Systems Format) files, leading to data being copied to a fixed-length heap-based buffer without proper bounds checking. Successful exploitation can result in arbitrary code execution in the context of the current process.	Story Points:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2447935, 2447933, 2447934, 2447936, 2447937
Bug Blocks:

Description OSIDB Bzimport 2026-03-13 21:02:09 UTC

GStreamer ASF Demuxer Heap-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 processing of stream headers within ASF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28843.

Comment 2 errata-xmlrpc 2026-03-31 13:04:40 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:6259 https://access.redhat.com/errata/RHSA-2026:6259

Comment 3 errata-xmlrpc 2026-03-31 19:40:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:6300 https://access.redhat.com/errata/RHSA-2026:6300

Comment 6 errata-xmlrpc 2026-04-07 08:13:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:6750 https://access.redhat.com/errata/RHSA-2026:6750

Comment 7 errata-xmlrpc 2026-04-20 02:52:16 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:8854 https://access.redhat.com/errata/RHSA-2026:8854

Comment 8 errata-xmlrpc 2026-04-20 04:23:09 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:8862 https://access.redhat.com/errata/RHSA-2026:8862

Comment 9 errata-xmlrpc 2026-05-19 13:03:03 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19024 https://access.redhat.com/errata/RHSA-2026:19024

Comment 10 errata-xmlrpc 2026-05-19 17:59:41 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19180 https://access.redhat.com/errata/RHSA-2026:19180