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avcodec/vp9: Check in decode_tiles() if there is data remaining 

Fixes: Timeout
Fixes: 9330/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VP9_fuzzer-5707345857347584
Fixes: 9775/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VP9_fuzzer-5643845344690176

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-08-04 22:21:02 +02:00
parent 0fb83b4c91
commit 78862488f8
1 changed files with 3 additions and 0 deletions
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3
libavcodec/vp9.c
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@ -1306,6 +1306,9 @@ static int decode_tiles(AVCodecContext *avctx,
decode_sb_mem(td, row, col, lflvl_ptr,
yoff2, uvoff2, BL_64X64);
} else {
if (vpX_rac_is_end(td->c)) {
return AVERROR_INVALIDDATA;
}
decode_sb(td, row, col, lflvl_ptr,
yoff2, uvoff2, BL_64X64);
}