CVE-2026-2921
gst-plugins-base1.0 - security update
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.
How to fix CVE-2026-2921
To remediate CVE-2026-2921, upgrade the affected package to a fixed version below.
- —upgrade to 1.18.4-2+deb11u5 or later
- —upgrade to 1.18.4-2+deb11u5 or later
- —upgrade to 1.22.0-3+deb12u6 or later
Is CVE-2026-2921 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.18.4-2+deb11u5
- from 0, < 1.18.4-2+deb11u5
- from 0, < 1.22.0-3+deb12u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |