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Advisory severityMedium6.1Red Hat Linux

Medium [CVE-2026-73434] out-of-bounds read in avidemux vprp video field descriptor parsing

This medium-severity Red Hat Linux advisory covers CVE-2026-73434 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-73434 Source published Source updated

VulniPulse record published Record updated

CVE-2026-73434
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

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Summary

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).

Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H). Weakness: CWE-125.

Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2026:55434, RHSA-2026:65959, RHSA-2026:56966, RHSA-2026:55436.

Affected products named by the advisory: Red Hat package: gstreamer1-plugins-good.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Fixed versions
  • gstreamer1-plugins-good-0:1.26.7-2.el10_2.5
  • gstreamer1-plugins-good-0:1.24.11-1.el10_0.4
  • gstreamer1-plugins-good-0:1.16.1-7.el8_10.3
  • gstreamer1-plugins-good-0:1.22.12-7.el9_8.4
  • RHSA-2026:55434
  • RHSA-2026:65959
  • RHSA-2026:56966
  • RHSA-2026:55436

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Mitigation

Upgrade to a fixed release: gstreamer1-plugins-good-0:1.26.7-2.el10_2.5, gstreamer1-plugins-good-0:1.24.11-1.el10_0.4, gstreamer1-plugins-good-0:1.16.1-7.el8_10.3, gstreamer1-plugins-good-0:1.22.12-7.el9_8.4, RHSA-2026:55434, RHSA-2026:65959. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Discussion(0)

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