CVE-2026-73433

CVE CVE-2026-73433EUVD EUVD-2026-57444Published 2026-08-12T19:05:27.000ZLast changed 2026-08-19T20:54:30.000ZCVSS 6.6

What the advisory describes

A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107 bytes, the counter underflows to a very large unsigned value, causing subsequent null-terminated string scanning to read far beyond the allocated heap buffer. Date-format normalization may also write beyond the buffer end. Confirmed impacts include heap out-of-bounds read, out-of-bounds write, heap information disclosure (adjacent data appearing in parsed metadata), and application crash/denial of service. The avidemux element is auto-plugged by playbin, decodebin, and gst-discoverer, so opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

GStreamer — gst-plugins-good 0 <1.28.6
Red Hat — Red Hat Enterprise Linux 10 patch: 0:1.26.7-2.el10_2.5
Red Hat — Red Hat Enterprise Linux 8 patch: 0:1.16.1-7.el8_10.3
Red Hat — Red Hat Enterprise Linux 9 patch: 0:1.22.12-7.el9_8.4

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Red Hat — Red Hat Enterprise Linux

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