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Fencer Intel
medium 6.5

CVE-2026-52718 json

Gstreamer1-plugins-bad-free: gstreamer: denial of service via av1 tile_list_obu parser byte/bit confusion

published 4mo ago modified 6d ago also EUVD-2026-36805

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:1.26.7-2.el10_2.4
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.24.11-3.el10_0.4
  • Red Hat Red Hat Enterprise Linux 9 0:1.22.12-7.el9_8.1
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.18.4-9.el9_2.3
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.22.1-6.el9_4.4
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.22.12-5.el9_6.4
  • gst-plugins-bad1.0 Debian 12 1.22.0-4+deb12u8
  • gst-plugins-bad1.0 Debian 13 1.26.2-3+deb13u2
  • gst-plugins-bad1.0 Debian 14 1.28.4-1

debian advisories DEBIAN-CVE-2026-52718

  • gstreamer1-plugins-bad-free RHEL 9 1.22.12-7.el9_8.1
  • gstreamer1-plugins-bad-free-libs RHEL 9 1.22.12-7.el9_8.1
  • gstreamer1-plugins-bad-free RHEL 10.2 1.26.7-2.el10_2.4
  • gstreamer1-plugins-bad-free-libs RHEL 10.2 1.26.7-2.el10_2.4
  • gstreamer1-plugins-bad-free enterprise linux eus 10.0 1.24.11-3.el10_0.4
  • gstreamer1-plugins-bad-free-libs enterprise linux eus 10.0 1.24.11-3.el10_0.4
  • gstreamer1-plugins-bad-free RHEL 9.4 E4S 1.22.1-6.el9_4.4
  • gstreamer1-plugins-bad-free RHEL 9.2 E4S 1.18.4-9.el9_2.3

red hat advisories RHSA-2026:47717RHSA-2026:47071RHSA-2026:47069RHSA-2026:47070RHSA-2026:36834RHSA-2026:36749

  • gstreamer-plugins-bad SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 1.26.7-160000.4.1
  • gstreamer-plugins-bad SLE Module for Package Hub 15 SP7, SLE Module for Desktop Applications 15 SP7, SLE Module for Basesystem 15 SP7 1.24.0-150600.4.12.1

suse advisories SUSE-SU-2026:23274-1SUSE-SU-2026:23308-1SUSE-SU-2026:3527-1

  • gstreamer-plugins-bad openSUSE Leap 16.0 1.26.7-160000.4.1
  • gstreamer-plugins-bad openSUSE Tumbleweed 1.28.4+24-1.1

opensuse advisories openSUSE-SU-2026:21629-1openSUSE-SU-2026:11088-1

  • gstreamer1-plugins-bad-free AlmaLinux 10 1.26.7-2.el10_2.4
  • gstreamer1-plugins-bad-free-libs AlmaLinux 10 1.26.7-2.el10_2.4
  • gstreamer1-plugins-bad-free AlmaLinux 9 1.22.12-7.el9_8.1
  • gstreamer1-plugins-bad-free-libs AlmaLinux 9 1.22.12-7.el9_8.1

almalinux advisories ALSA-2026:36749ALSA-2026:36834

  • gstreamer1-plugins-bad-free Rocky Linux 10 1.26.7-2.el10_2.4
  • gstreamer1-plugins-bad-free Rocky Linux 9 1.22.12-7.el9_8.1

rocky linux advisories RLSA-2026:36749RLSA-2026:36834

Is CVE-2026-52718 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-52718 updated cvss 6.5

gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit confusion

  • Red Hat Enterprise Linux 6 gstreamer-plugins-bad-free, gstreamer-plugins-bad-free-extras
    affected: workaround, no fix planned “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.”
  • Red Hat CodeReady Linux Builder EUS (v.9.6) gstreamer1-plugins-bad-free-devel 1.22.12-5.el9_6.4, gstreamer1-plugins-bad-free-debuginfo 1.22.12-5.el9_6.4, gstreamer1-plugins-bad-free-debugsource 1.22.12-5.el9_6.4, gstreamer1-plugins-bad-free-libs-debuginfo 1.22.12-5.el9_6.4
    fixed: vendor fix “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.” RHSA-2026:47070
  • Red Hat Enterprise Linux AppStream (v. 9) gstreamer1-plugins-bad-free 1.22.12-7.el9_8.1, gstreamer1-plugins-bad-free-libs 1.22.12-7.el9_8.1
    fixed: vendor fix “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.” RHSA-2026:36834
  • Red Hat Enterprise Linux AppStream (v. 10) gstreamer1-plugins-bad-free 1.26.7-2.el10_2.4, gstreamer1-plugins-bad-free-libs 1.26.7-2.el10_2.4
    fixed: vendor fix “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.” RHSA-2026:36749
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) gstreamer1-plugins-bad-free 1.18.4-9.el9_2.3
    fixed: vendor fix “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.” RHSA-2026:47069
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) gstreamer1-plugins-bad-free 1.22.1-6.el9_4.4
    fixed: vendor fix “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.” RHSA-2026:47071
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) gstreamer1-plugins-bad-free 1.24.11-3.el10_0.4, gstreamer1-plugins-bad-free-libs 1.24.11-3.el10_0.4
    fixed: vendor fix “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.” RHSA-2026:47717
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) gstreamer1-plugins-bad-free 1.22.12-5.el9_6.4, gstreamer1-plugins-bad-free-libs 1.22.12-5.el9_6.4
    fixed: vendor fix “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.” RHSA-2026:47070
show 4 more
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) gstreamer1-plugins-bad-free-devel 1.22.12-7.el9_8.1, gstreamer1-plugins-bad-free-debuginfo 1.22.12-7.el9_8.1, gstreamer1-plugins-bad-free-debugsource 1.22.12-7.el9_8.1, gstreamer1-plugins-bad-free-libs-debuginfo 1.22.12-7.el9_8.1
    fixed: vendor fix “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.” RHSA-2026:36834
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) gstreamer1-plugins-bad-free-devel 1.26.7-2.el10_2.4, gstreamer1-plugins-bad-free-debuginfo 1.26.7-2.el10_2.4, gstreamer1-plugins-bad-free-debugsource 1.26.7-2.el10_2.4, gstreamer1-plugins-bad-free-libs-debuginfo 1.26.7-2.el10_2.4
    fixed: vendor fix “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.” RHSA-2026:36749
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) gstreamer1-plugins-bad-free-devel 1.24.11-3.el10_0.4, gstreamer1-plugins-bad-free-debuginfo 1.24.11-3.el10_0.4, gstreamer1-plugins-bad-free-debugsource 1.24.11-3.el10_0.4, gstreamer1-plugins-bad-free-libs-debuginfo 1.24.11-3.el10_0.4
    fixed: vendor fix “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.” RHSA-2026:47717
  • Red Hat Enterprise Linux 7 gstreamer-plugins-bad-free, gstreamer1-plugins-bad-free, gstreamer1-plugins-bad-free-gtk Red Hat Enterprise Linux 8 gstreamer1-plugins-bad-free
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.