Bug 2569087 - CVE-2026-121601 gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: Out-of-bounds read in mxfdemux via unchecked delta_id and slice index [fedora-all]
Summary: CVE-2026-121601 gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: Out...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: gstreamer1-plugins-bad-free
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Yaakov Selkowitz
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["704b7917-e48f-4b17-a0b0-8...
Depends On:
Blocks: CVE-2026-121601
TreeView+ depends on / blocked
 
Reported: 2026-11-09 11:15 UTC by lcelant
Modified: 2026-11-09 11:15 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description lcelant 2026-11-09 11:15:23 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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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