Skip to content
VulniPulse
Sign in
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

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.

Is CVE-2026-52718 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-52718 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-52718?

Upgrade to a fixed release named by Red Hat:

  • 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

Confirm against the vendor advisory before you patch.

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 17 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 17 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 17 days ago·verify at source

Get an email when Red Hat RHEL & SELinux publishes the next one.

See Red Hat RHEL & SELinux's last 90 days of advisories first. Then choose one product with live alerts free for life, or a free month of real-time alerts on everything with the severity, the fixed version and the vendor's link (card needed, then US$15/month; we email you before the first charge).

Alert me about Red Hat RHEL & SELinux

More Red Hat Linux advisories

All Red Hat Linux advisories

iPhone and Android apps · New on the App Store

Monitor future Red Hat Linux CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.

Download on the App StoreGet CVE alerts on AndroidSee app features

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.

Sign in to join the discussion.