CVE-2026-2920 — GStreamer ASF Demuxer Heap-based Buffer Overflow Remote Code Execution Vulnerability

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
GStreamer / GStreamer	affected 1c6e163aa33962f5ee4a87d29319ccdd5cb67612

CWE

CWE-122

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in GStreamer. This heap-based buffer overflow vulnerability in the ASF Demuxer component allows a remote attacker to execute arbitrary code. The issue arises from insufficient validation of user-supplied data length when processing stream headers within ASF (Advanced Systems Format) files, leading to data being copied to a fixed-length heap-based buffer without proper bounds checking. Successful exploitation can result in arbitrary code execution in the context of the current process.