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avcodec/vp8: Check for bitstream end before vp7_fade_frame()
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 de675648cef7e451ca82fabaee0d8ec1fe653311) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -605,6 +605,8 @@ static int vp7_decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_si
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s->fade_present = vp8_rac_get(c);
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}
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if (c->end <= c->buffer && c->bits >= 0)
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return AVERROR_INVALIDDATA;
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/* E. Fading information for previous frame */
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if (s->fade_present && vp8_rac_get(c)) {
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if ((ret = vp7_fade_frame(s ,c)) < 0)
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