decoder/dsf: add range check

9dcbd005 · Max Kellermann · 0ad2eb34 · 9dcbd005
Commit 9dcbd005 authored Oct 28, 2013 by Max Kellermann
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DsfDecoderPlugin.cxx src/decoder/DsfDecoderPlugin.cxx +3 -0

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--- a/src/decoder/DsfDecoderPlugin.cxx
+++ b/src/decoder/DsfDecoderPlugin.cxx
@@ -151,6 +151,9 @@ dsf_read_metadata(Decoder *decoder, InputStream &is,
 	   we use the actual data size as chunk size */

 	uint64_t data_size = data_chunk.size.Read();
+	if (data_size < sizeof(data_chunk))
+		return false;
+
 	data_size -= sizeof(data_chunk);

 	metadata->chunk_size = data_size;