Bug 2486328 (CVE-2026-52718) - CVE-2026-52718 gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit confusion
Summary: CVE-2026-52718 gstreamer1-plugins-bad-free: GStreamer: Denial of service via ...
Keywords:
Status: NEW
Alias: CVE-2026-52718
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-08 13:07 UTC by OSIDB Bzimport
Modified: 2026-06-15 17:16 UTC (History)
3 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-08 13:07:10 UTC 
GStreamer AV1 tile_list_obu parser abort vulnerability. The gst_av1_parser_parse_tile_list_obu() function in gstav1parser.c (gst-plugins-bad) passes a byte count to gst_bit_reader_skip(), which expects a bit count. This causes parser desynchronization and a deterministic g_assert abort when processing a specially crafted AV1 media file. A 21-byte test case is sufficient to trigger the crash. Upstream confirmed by maintainer Sebastian Dröge (2026-06-02). Fix planned for GStreamer 1.28.4 or 1.28.5. Upstream issue: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5103 (confidential). Reported via PSIRTSUPT-17026 by JUNYI LIU / Moss 1.
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