CVE-2026-12891

Description

A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.

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Produits concernés

• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Gstreamer gstreamer
• Redhat enterprise linux

Scores CVSS

Faiblesses (CWE)

• CWE-125

Références

• https://access.redhat.com/security/cve/CVE-2026-12891 Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2491318 Third Party Advisory
• https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5109 Not Applicable

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories