avformat/wavdec: Check chunk_size

Fixes integer overflow and out of array access Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
8 years ago · 3d23219637
parent 5871adc90f
commit 3d23219637
1 changed files with 2 additions and 0 deletions
--- a/libavformat/wavdec.c
+++ b/libavformat/wavdec.c
@ -841,6 +841,8 @@ static int w64_read_header(AVFormatContext *s)
                chunk_key[4] = 0;
                avio_read(pb, chunk_key, 4);
                chunk_size = avio_rl32(pb);
+                if (chunk_size == UINT32_MAX)
+                    return AVERROR_INVALIDDATA;

                value = av_mallocz(chunk_size + 1);
                if (!value)