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Advisory severityMedium6.5Red Hat Linux

Medium [CVE-2026-52718] denial of service via av1 tile_list_obu parser byte/bit confusion

This medium-severity Red Hat Linux advisory covers CVE-2026-52718 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

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

CVE-2026-52718 Source published Source updated

VulniPulse record published

CVE-2026-52718
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

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Summary

A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit count, causing parser desynchronization.

A remote attacker could trick a user into opening a specially crafted AV1 media file, triggering an assertion abort and causing the application to crash. The flaw allows a deterministic application crash when processing specially crafted AV1 media files due to a byte/bit unit confusion in gst_av1_parser_parse_tile_list_obu().

The impact is limited to availability since the assertion abort terminates the process immediately with no path to code execution or information disclosure. Red Hat products utilizing GStreamer for multimedia processing are affected if they handle untrusted AV1 media content.

Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-617.

Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Enterprise Linux 6.

Red Hat lists Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8 as not affected.

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 22 days ago·verify at source

Fixed versions
  • gstreamer1-plugins-bad-free-0:1.26.7-2.el10_2.4
  • gstreamer1-plugins-bad-free-0:1.24.11-3.el10_0.4
  • gstreamer1-plugins-bad-free-0:1.22.12-7.el9_8.1
  • gstreamer1-plugins-bad-free-0:1.18.4-9.el9_2.3
  • gstreamer1-plugins-bad-free-0:1.22.1-6.el9_4.4
  • gstreamer1-plugins-bad-free-0:1.22.12-5.el9_6.4
  • RHSA-2026:36749
  • RHSA-2026:47717
  • RHSA-2026:36834
  • RHSA-2026:47069
  • RHSA-2026:47071
  • RHSA-2026:47070

Official advisory · high-confidence parse· fetched 22 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.

Official advisory · high-confidence parse· fetched 22 days ago·verify at source

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