Advisory Details

March 6th, 2026

GStreamer RIFF Palette Integer Overflow Remote Code Execution Vulnerability

ZDI-26-168
ZDI-CAN-28854

CVE ID CVE-2026-2921
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS GStreamer
AFFECTED PRODUCTS GStreamer
VULNERABILITY DETAILS

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.

ADDITIONAL DETAILS GStreamer has issued an update to correct this vulnerability. More details can be found at:
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/e3a99c35266fc92dd6a18ac5fde028d0cda559e6
DISCLOSURE TIMELINE
  • 2026-02-11 - Vulnerability reported to vendor
  • 2026-03-06 - Coordinated public release of advisory
  • 2026-03-06 - Advisory Updated
CREDIT Anonymous
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