CVE-2026-19389

Multiple integer overflow and underflow vulnerabilities were found in the GStreamer gst-plugins-ugly ASF demuxer (asfdemux) when parsing header objects from crafted ASF, WMV, or WMA files. Insufficient validation of attacker-controlled length and size values can bypass bounds checks and cause out-of-bounds heap reads. This can result in application crash, denial of service, or limited information disclosure when untrusted media is processed.

This is an Important flaw. Integer overflow and underflow vulnerabilities in the GStreamer ASF demuxer can lead to a denial of service and limited heap information disclosure. This occurs when processing specially crafted ASF/WMV/WMA files, a risk amplified by the demuxer being automatically utilized by GStreamer's common playback elements in Red Hat products.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.