CVE-2026-12892

Description

A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary information without first verifying that the NAL unit contains enough data beyond the extension header. An attacker could exploit this by tricking a user into opening a malicious H.264 video file, potentially causing the application to crash or leak a single byte of heap memory.

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Produits concernés

• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• 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-2026-12892 Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2491321 Vendor AdvisoryIssue Tracking
• https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5108 Not Applicable

Ailleurs

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