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avcodec/ffv1dec_template: Check for the end of input after 1024 pixels

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Fixes: Timeout
Fixes: 10385/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFV1_fuzzer-5689206987292672

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 2018-10-08 03:35:58 +02:00
parent 8f15248024
commit ccd2b20ad9
1 changed files with 5 additions and 0 deletions
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5
libavcodec/ffv1dec_template.c
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@ -50,6 +50,11 @@ static av_always_inline int RENAME(decode_line)(FFV1Context *s, int w,
for (x = 0; x < w; x++) {
int diff, context, sign;
if (!(x & 1023)) {
if (is_input_end(s))
return AVERROR_INVALIDDATA;
}
context = RENAME(get_context)(p, sample[1] + x, sample[0] + x, sample[1] + x);
if (context < 0) {
context = -context;