Vulnerability in Red Hat Enterprise Linux 10

[ Description ]Official description

A flaw was found in GStreamer's H.266 codec parser library (libgstcodecparsers). An out-of-bounds write vulnerability exists in the DCI parsing function, where a reserved field value is incorrectly accepted, causing the parser to write beyond the bounds of an internal structure. An attacker could exploit this by providing a specially crafted H.266 bitstream to a third-party application that uses this library API, potentially causing a crash or memory corruption. No standard GStreamer pipeline element currently invokes the affected code path.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund14 Oct 2026WID-SEC-2026-3958

  GStreamer: Multiple vulnerabilities Translated from German

  CVE-2026-100229CVE-2026-100231

[ References ]References

• access.redhat.com/security/cve/CVE-2026-100229
• bugzilla.redhat.com/show_bug.cgi