CVE-2026-121611

Public on 2026-11-09
Modified on 2026-11-11
Description
A flaw was found in GStreamer's gst-plugins-bad package. A use of uninitialized memory vulnerability exists in the H.265 (HEVC) bitstream parser when processing Video Parameter Sets that declare more than one HRD (Hypothetical Reference Decoder) parameter set. A remote attacker could exploit this by providing a crafted H.265 media file or stream that, when processed by an application using GStreamer, causes unpredictable parser behavior and may crash the application. This can lead to a denial of service for any application using GStreamer to play back H.265 content.
Severity
Medium severity
Medium
See what this means
CVSS v3 Base Score
6.5
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core gstreamer-plugins-bad-free Not Affected
Amazon Linux 2 - Core gstreamer1-plugins-bad-free Pending Fix
Amazon Linux 2023 gstreamer1-plugins-bad-free Pending Fix
Amazon Linux 2027 Preview gstreamer1-plugins-bad-free Pending Fix

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H