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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-10-09 11:49:28 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-10-10 23:58:41 +0200 |
| commit | c20f4fcb74da2d0432c7b54499bb98f48236b904 (patch) | |
| tree | 59db97838648684c96e81644d605cae4dc8ee752 /libavcodec | |
| parent | bdee75a4e750735ab3039f004275ac8479072048 (diff) | |
| download | ffmpeg-c20f4fcb74da2d0432c7b54499bb98f48236b904.tar.gz | |
avcodec/ffv1dec: Fix out of array read in slice counting
Fixes: test-201710.mp4
Found-by: 连一汉 <lianyihan@360.cn> and Zhibin Hu
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/ffv1dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index d2bfee784f..5eadb6b158 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -717,7 +717,7 @@ static int read_header(FFV1Context *f) } else { const uint8_t *p = c->bytestream_end; for (f->slice_count = 0; - f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start; + f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start; f->slice_count++) { int trailer = 3 + 5*!!f->ec; int size = AV_RB24(p-trailer); |