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avcodec/vp8_parser: Do not leave data/size uninitialized 

This is identical to what the VP9 parser does

Fixes: 9215/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LIBVPX_VP8_fuzzer-5768227253649408
Fixes: out of memory access

This may also fix oss fuzz issue 9212

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 284dde24da)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-07-06 12:01:46 +02:00
parent 4d77a4a54d
commit 68fb93be04
1 changed files with 3 additions and 0 deletions
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3
libavcodec/vp8_parser.c
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@ -28,6 +28,9 @@ static int parse(AVCodecParserContext *s,
unsigned int frame_type;
unsigned int profile;
*poutbuf = buf;
*poutbuf_size = buf_size;
if (buf_size < 3)
return buf_size;