CVE-2026-2921

Publication date 16 March 2026

Last updated 30 March 2026

Ubuntu priority

Cvss 3 Severity Score

Description

GStreamer RIFF Palette Integer 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 handling of palette data in AVI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28854.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gst-plugins-base1.0	25.10 questing	Fixed 1.26.6-1ubuntu0.1
	24.04 LTS noble	Fixed 1.24.2-1ubuntu0.4
	22.04 LTS jammy	Fixed 1.20.1-1ubuntu0.6
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
gst-plugins-base1.0	Upstream: 66d1f79

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-8130-1
GStreamer Base Plugins vulnerability
30 March 2026