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Vulnerability · Published Aug 12, 2026 · Assigned by redhat

CVE-2026-73434Gstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux vprp video field descriptor parsing

Medium 6.1

In plain English

A medium-severity out-of-bounds read in gst-plugins-good from GStreamer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.1%top 95.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10gstreamer1-plugins-good1.26.7-2.el10_2.5ALSA-2026:55434
AlmaLinux:8gstreamer1-plugins-good1.16.1-7.el8_10.3ALSA-2026:56966
AlmaLinux:9gstreamer1-plugins-good1.22.12-7.el9_8.4ALSA-2026:55436
AlmaLinux:10gstreamer1-plugins-good-gtk1.26.7-2.el10_2.5ALSA-2026:55434
AlmaLinux:8gstreamer1-plugins-good-gtk1.16.1-7.el8_10.3ALSA-2026:56966
AlmaLinux:9gstreamer1-plugins-good-gtk1.22.12-7.el9_8.4ALSA-2026:55436
Debian:12gst-plugins-good1.01.22.0-5+deb12u4DEBIAN-CVE-2026-73434
Debian:13gst-plugins-good1.0no fix listedDEBIAN-CVE-2026-73434
Debian:14gst-plugins-good1.01.28.6-1DEBIAN-CVE-2026-73434
Rocky Linux:10gstreamer1-plugins-good0:1.26.7-2.el10_2.5RLSA-2026:55434
Rocky Linux:8gstreamer1-plugins-good0:1.16.1-7.el8_10.3RLSA-2026:56966
Rocky Linux:9gstreamer1-plugins-good0:1.22.12-7.el9_8.4RLSA-2026:55436
Ubuntu:22.04:LTSgst-plugins-good1.01.20.3-0ubuntu1.10UBUNTU-CVE-2026-73434
Ubuntu:22.04:LTSgst-plugins-good1.01.20.3-0ubuntu1.10USN-8863-1
Ubuntu:24.04:LTSgst-plugins-good1.01.24.2-1ubuntu1.8USN-8863-1
Ubuntu:24.04:LTSgst-plugins-good1.01.24.2-1ubuntu1.8UBUNTU-CVE-2026-73434
Ubuntu:26.04:LTSgst-plugins-good1.01.28.2-2ubuntu0.4USN-8863-1
Ubuntu:26.04:LTSgst-plugins-good1.01.28.2-2ubuntu0.4UBUNTU-CVE-2026-73434

Affected products (as reported)

VendorProductVersions
GStreamer gst-plugins-good 0 – before 1.28.6
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

References