CVE-2026-73433Gstreamer1-plugins-good: gstreamer: unsigned integer underflow in avidemux fujifilm strd parsing leading to out-of-bounds read/write
Updated under an hour ago ()
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It affects GStreamer gst-plugins-good and 9 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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).
- CVSS
- 6.6 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
- Weakness (CWE)
- CWE-191
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Undergoing Analysis
- Record last updated
- Sep 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
GStreamer gst-plugins-good gstreamer:gst_plugins_good (from the name) | before 1.28.6 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:1.26.7-2.el10_2.5 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:1.24.11-1.el10_0.4 not affected | CNA record |
from 0:1.10.4-4.el7_9.3 not affected | CNA record | |
from 0:1.16.1-4.el8_4.2 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_eus_long_life | from 0:1.16.1-4.el8_4.2 not affected | CNA record |
from 0:1.16.1-5.el8_8.3 not affected | CNA record | |
from 0:1.16.1-5.el8_8.3 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 0:1.22.12-5.el9_6.3 not affected | CNA record |
gstreamer gstreamer gstreamer:gstreamer | through 1.28.6 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 7.0; 8.0; 9.0; 10.0 | NVD |
References
- https://access.redhat.com/errata/RHSA-2026:55434vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:55436vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:56966vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65959vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:68642vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:68644vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:68645vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:69232vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:70264vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:70584vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:70803vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-73433vdb-entry, x-refsource-redhat, third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2514801issue-tracking, x-refsource-redhat, third-party-advisory
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231issue-tracking
- https://gstreamer.freedesktop.org/security/sa-2026-0072.htmlpatch, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.