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).
https://bugzilla.redhat.com/show_bug.cgi?id=2514807
https://access.redhat.com/security/cve/CVE-2026-73434
https://access.redhat.com/errata/RHSA-2026:70803
https://access.redhat.com/errata/RHSA-2026:70584
https://access.redhat.com/errata/RHSA-2026:70264
https://access.redhat.com/errata/RHSA-2026:69232
https://access.redhat.com/errata/RHSA-2026:68645
https://access.redhat.com/errata/RHSA-2026:68644
https://access.redhat.com/errata/RHSA-2026:68642
https://access.redhat.com/errata/RHSA-2026:65959
https://access.redhat.com/errata/RHSA-2026:56966