Bug 2565920 (CVE-2026-121601) - CVE-2026-121601 gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: Out-of-bounds read in mxfdemux via unchecked delta_id and slice index
Summary: CVE-2026-121601 gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: Out...
Keywords:
Status: NEW
Alias: CVE-2026-121601
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2569075 2569076 2569077 2569078 2569079 2569080 2569086 2569087
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 16:19 UTC by OSIDB Bzimport
Modified: 2026-11-09 11:15 UTC (History)
3 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-11-03 16:19:06 UTC 
gst-plugins-bad mxfdemux (gst/mxf/mxfdemux.c) contains at least five heap-buffer-overflow READ paths introduced in GStreamer 1.20.0 by the index-table refactor (commit ac483b2384, 2021-07-21). Root cause CWE-129: find_edit_entry() and find_entry_for_offset() use delta_id and slice as array indices without validating against n_delta_entries and slice_count.

Affected upstream GStreamer versions: >= 1.20.0, fixed in 1.28.9 (unreleased as of 2026-10-30). Upstream advisory SA-2026-0093; fix in gstreamer-security MR !131.

PSIRT ticket: PSIRTSUPT-29601.

Reporter: Sebastian Dröge, Centricular Ltd.
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