gstreamer/security-advisories/sa-2021-0005.md

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# Security Advisory 2021-0005
<div class="vertical-table">
| | |
| ----------------- | --- |
| Summary | Stack overflow in gst\_ffmpeg\_channel\_layout\_to\_gst() |
| Date | 2021-03-15 16:00 |
| Affected Versions | GStreamer gst-libav 1.x <= 1.18.3 |
| ID | GStreamer-SA-2021-0005 |
</div>
## Details
GStreamer before 1.18.4 might cause stack corruptions with streams that have more than 64 audio channels.
## Impact
It might be possible for a malicious third party to trigger a crash in the application.
## Solution
The gst-libav 1.18.4 release addresses the issue. People using older branches of GStreamer should apply the patch and recompile.
## References
### The GStreamer project
- [https://gstreamer.freedesktop.org](https://gstreamer.freedesktop.org)
### GStreamer 1.18.4 release
- [Release Notes](/releases/1.18/#1.18.4)
- [GStreamer plugin for the FFmpeg libav* libraries 1.18.4](/src/gst-libav/gst-libav-1.18.4.tar.xz)
### Patches
- [Patch](https://gitlab.freedesktop.org/gstreamer/gst-libav/-/commit/a339f8f9641382b92b43e6d146bdc5d87a9704f8?merge_request_iid=121)