Bug 2521079

Summary:	CVE-2026-18298 mingw-gstreamer1: GStreamer: Remote code execution via heap-based buffer overflow in PNG file parsing [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Vladimir Vasilev <vvasilev>
Component:	mingw-gstreamer1	Assignee:	Sandro Mani <manisandro>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	manisandro, tuxator
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["04e440f4-cefc-42a2-9d20-3d5a73a5bf1f"]}
Fixed In Version:	mingw-gstreamer1-1.28.6-1.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-09-03 00:58:37 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2520590

Description Vladimir Vasilev 2026-08-21 18:20:02 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 PNG File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of PNG files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29581.

Comment 1 Fedora Update System 2026-08-25 22:14:34 UTC

FEDORA-2026-e6ca27403f (mingw-gstreamer1-1.28.6-1.fc44, mingw-gstreamer1-plugins-bad-free-1.28.6-1.fc44, and 2 more) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-e6ca27403f

Comment 2 Fedora Update System 2026-08-25 22:14:46 UTC

FEDORA-2026-bcfa11cd3b (mingw-gstreamer1-plugins-base-1.26.11-2.fc43 and mingw-gstreamer1-plugins-good-1.26.11-3.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-bcfa11cd3b

Comment 3 Fedora Update System 2026-08-26 01:42:21 UTC

FEDORA-2026-bcfa11cd3b has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-bcfa11cd3b`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-bcfa11cd3b

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-08-26 02:02:54 UTC

FEDORA-2026-e6ca27403f has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-e6ca27403f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e6ca27403f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-09-03 00:58:37 UTC

FEDORA-2026-bcfa11cd3b (mingw-gstreamer1-plugins-base-1.26.11-2.fc43 and mingw-gstreamer1-plugins-good-1.26.11-3.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-09-03 01:22:42 UTC

FEDORA-2026-e6ca27403f (mingw-gstreamer1-1.28.6-1.fc44, mingw-gstreamer1-plugins-bad-free-1.28.6-1.fc44, and 2 more) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.