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matroskamux: fix possible crash with malformed dirac codec_data

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Since size is unsigned, we need to safeguard against wrapping below zero.
This commit is contained in:
René Stadler 2011-10-11 22:10:27 +02:00
parent 6082f27d48
commit 6fc85e6c9d
1 changed files with 1 additions and 1 deletions
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2
gst/matroska/matroska-mux.c
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@ -2594,7 +2594,7 @@ gst_matroska_mux_handle_dirac_packet (GstMatroskaMux * mux,
next_parse_offset = GST_READ_UINT32_BE (data + 5);
if (G_UNLIKELY (next_parse_offset == 0))
if (G_UNLIKELY (next_parse_offset == 0 || next_parse_offset > size))
break;
data += next_parse_offset;