CVE-2026-73434
Last modified
CVE-2026-73434 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A flaw was found in GStreamer gst-plugins-good (avidemux). In gst_avi_demux_riff_parse_vprp(), the number of available gst_riff_vprp_video_field_desc entries is calculated by dividing the remaining buffer size by the attacker-controlled vprp->fields value, rather than by sizeof(gst_riff_vprp_video_field_desc). EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
A flaw was found in GStreamer gst-plugins-good (avidemux). In gst_avi_demux_riff_parse_vprp(), the number of available gst_riff_vprp_video_field_desc entries is calculated by dividing the remaining buffer size by the attacker-controlled vprp->fields value, rather than by sizeof(gst_riff_vprp_video_field_desc). This can cause the parser to treat more field descriptors as available than fit in the input buffer, resulting in out-of-bounds reads. Processing a crafted AVI via playbin/decodebin can crash the application (denial of service). Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gstreamer | Gstreamer | < 1.28.6 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux | 10.0 |
References
- https://access.redhat.com/errata/RHSA-2026:55434Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:55436Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2026-73434Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2514807Issue Tracking, Third Party Advisory
- https://gstreamer.freedesktop.org/security/sa-2026-0072.htmlPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Undergoing Analysis
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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