CVE-2026-73434

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

State: Published
Severity: 6.1 Medium
Published: Aug 12, 2026
Updated: Sep 23, 2026
Reserved: Aug 12, 2026

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).

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H	redhat

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
gst-plugins-goodGStreamer	before 1.28.6Affected
Red Hat Enterprise Linux 10Red Hat	0:1.26.7-2.el10_2.5 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:1.24.11-1.el10_0.4 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat	0:1.10.4-4.el7_9.3 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:1.16.1-7.el8_10.3 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	0:1.16.1-4.el8_4.2 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	0:1.16.1-4.el8_4.2 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:1.16.1-4.el8_6.3 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat	0:1.16.1-4.el8_6.3 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:1.16.1-5.el8_8.3 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:1.16.1-5.el8_8.3 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:1.22.12-7.el9_8.4 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:1.18.4-8.el9_2.3 and laterNot affected
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat	0:1.22.1-4.el9_4.3 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:1.22.12-5.el9_6.3 and laterNot affected

References

RHSA-2026:55434vendor-advisory
RHSA-2026:55436vendor-advisory
RHSA-2026:56966vendor-advisory
RHSA-2026:65959vendor-advisory
RHSA-2026:68642vendor-advisory
RHSA-2026:68644vendor-advisory
RHSA-2026:68645vendor-advisory
RHSA-2026:69232vendor-advisory
RHSA-2026:70264vendor-advisory
RHSA-2026:70584vendor-advisory
RHSA-2026:70803vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-73434vdb-entry
RHBZ#2514807issue-tracking
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12231
https://gstreamer.freedesktop.org/security/sa-2026-0072.html

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