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avcodec/vp8: Check for bitstream end before vp7_fade_frame()

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Fixes: Timeout
Fixes: 5653/clusterfuzz-testcase-5497680018014208

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 de675648ce)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-02-17 04:20:52 +01:00
parent 675e243949
commit 010dd0d26e
1 changed files with 2 additions and 0 deletions
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2
libavcodec/vp8.c
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@ -605,6 +605,8 @@ static int vp7_decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_si
s->fade_present = vp8_rac_get(c);
}
if (c->end <= c->buffer && c->bits >= 0)
return AVERROR_INVALIDDATA;
/* E. Fading information for previous frame */
if (s->fade_present && vp8_rac_get(c)) {
if ((ret = vp7_fade_frame(s ,c)) < 0)