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Merge "Properly check the data size against the end of the RIFF chunk" into main

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Vincent Rabaud 2024-12-10 08:10:16 +00:00 committed by Gerrit Code Review
commit 1b4c967fbb
1 changed files with 2 additions and 0 deletions
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src/mux/muxread.c
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@ -223,6 +223,8 @@ WebPMux* WebPMuxCreateInternal(const WebPData* bitstream, int copy_data,
// Note this padding is historical and differs from demux.c which does not
// pad the file size.
riff_size = SizeWithPadding(riff_size);
// Make sure the whole RIFF header is available.
if (riff_size < RIFF_HEADER_SIZE) goto Err;
if (riff_size > size) goto Err;
// There's no point in reading past the end of the RIFF chunk. Note riff_size
// includes CHUNK_HEADER_SIZE after SizeWithPadding().