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avcodec/interplayvideo: Fix timeout from lack of bitstream end check

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Fixes: 697/clusterfuzz-testcase-6111250582863872

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-03-01 17:56:23 +01:00
parent 3b0b35150d
commit 6191198c21
1 changed files with 2 additions and 0 deletions
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2
libavcodec/interplayvideo.c
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@ -928,6 +928,8 @@ static void ipvideo_decode_opcodes(IpvideoContext *s, AVFrame *frame)
init_get_bits(&gb, s->decoding_map, s->decoding_map_size * 8);
for (y = 0; y < s->avctx->height; y += 8) {
for (x = 0; x < s->avctx->width; x += 8) {
if (get_bits_left(&gb) < 4)
return;
opcode = get_bits(&gb, 4);
ff_tlog(s->avctx,