CVE-2026-19389
Received Received - Intake

Integer Overflow and Underflow in GStreamer gst-plugins-ugly ASF Demuxer

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: Red Hat, Inc.

Description
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.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-19389
EUVD
EUVD-2026-54987

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gstreamer gst-plugins-ugly 1.28.6

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

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Executive Summary

CVE-2026-19389 is a vulnerability in GStreamer's gst-plugins-ugly package affecting the ASF demuxer (asfdemux). It involves integer overflow and underflow issues when processing crafted ASF, WMV, or WMA files. Attackers manipulate length and size fields to bypass bounds checks, causing out-of-bounds heap reads. This can lead to application crashes, denial of service, or limited information disclosure.

Detection Guidance

Detecting this vulnerability requires checking the version of GStreamer's gst-plugins-ugly package. Use commands like 'gst-inspect-1.0 --version' to check the installed version. If the version is below 1.28.6, the system is vulnerable. Additionally, monitor for crashes or abnormal behavior when processing ASF, WMV, or WMA files.

Impact Analysis

If you process untrusted media files using GStreamer's playback elements like playbin or decodebin, this vulnerability could crash your application, disrupt services, or expose limited heap information. The impact is higher if the ASF demuxer is auto-plugged in your environment.

Compliance Impact

This vulnerability primarily affects application stability and information disclosure when processing untrusted media files. While it does not directly violate GDPR or HIPAA, it could indirectly impact compliance by enabling denial of service attacks or limited information disclosure through heap metadata handling. Organizations processing media in regulated environments should ensure proper input validation and apply available patches to mitigate risks.

Mitigation Strategies

Immediate mitigation steps include updating GStreamer to version 1.28.6 or later. If an update is not available, avoid processing untrusted ASF, WMV, or WMA files. Disable auto-plugging of the ASF demuxer if possible, or restrict media playback to trusted sources.

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