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matroskademux: Check for big enough WavPack codec private data before accessing it

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Thanks to Antonio Morales for finding and reporting the issue.

Fixes GHSL-2024-250
Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3866

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8057>
This commit is contained in:
Sebastian Dröge 2024-09-30 18:25:53 +03:00 committed by GStreamer Marge Bot
parent b7ad9a2c5d
commit 8aa1c185cf
1 changed files with 5 additions and 0 deletions
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5
subprojects/gst-plugins-good/gst/matroska/matroska-demux.c
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@ -3894,6 +3894,11 @@ gst_matroska_demux_add_wvpk_header (GstElement * element,
guint8 *buf_data, *data;
Wavpack4Header wvh;
if (!stream->codec_priv || stream->codec_priv_size < 2) {
GST_ERROR_OBJECT (element, "No or too small wavpack codec private data");
return GST_FLOW_ERROR;
}
wvh.ck_id[0] = 'w';
wvh.ck_id[1] = 'v';
wvh.ck_id[2] = 'p';