Detections
Analytics
CVE-2026-2920
high
Description
GStreamer ASF Demuxer Heap-based Buffer Overflow Remote Code Execution Vulnerability. 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 processing of stream headers within ASF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28843.
References
https://www.zerodayinitiative.com/advisories/ZDI-26-164/
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/37d7991168a223d0810fd1f4493ec6a8b6a510d3
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2920.json
https://bugzilla.redhat.com/show_bug.cgi?id=2447490
https://access.redhat.com/security/cve/CVE-2026-2920
https://access.redhat.com/errata/RHSA-2026:8862
https://access.redhat.com/errata/RHSA-2026:8854
https://access.redhat.com/errata/RHSA-2026:6750
https://access.redhat.com/errata/RHSA-2026:6300
https://access.redhat.com/errata/RHSA-2026:6259