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Description

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.

PUBLISHED Reserved 2026-06-08 | Published 2026-06-15 | Updated 2026-06-15 | Assigner redhat




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Problem types

Reachable Assertion

Product status

Default status
affected

Default status
unknown

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Timeline

2026-05-19:Reported to Red Hat.
2026-06-15:Made public.

Credits

Red Hat would like to thank JUNYI LIU for reporting this issue.

References

access.redhat.com/security/cve/CVE-2026-52718 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2486328 (RHBZ#2486328) issue-tracking

gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5103

cve.org (CVE-2026-52718)

nvd.nist.gov (CVE-2026-52718)

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