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| author | Michael Niedermayer <michael@niedermayer.cc> | 2016-05-19 18:02:53 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2016-06-05 02:40:31 +0200 |
| commit | 4d9fdca05319ec84c3052521b6693ce59fd2e0d9 (patch) | |
| tree | e75b8ee5b8afb423d5ed315abeb6ef6c2df1cd6e | |
| parent | b11900251fff69214cb5c73b491ca14c6bc2eacb (diff) | |
| download | ffmpeg-4d9fdca05319ec84c3052521b6693ce59fd2e0d9.tar.gz | |
avcodec/diracdec: Fix potential integer overflow
Fixes CID1361948
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 7ecfe4dc363435c81e66dd14881dc0b0ccc73fb1)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/diracdec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index 05c79005eb..1d7bb9b98b 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -903,8 +903,8 @@ static int decode_lowdelay(DiracContext *s) } else { for (slice_y = 0; bufsize > 0 && slice_y < s->num_y; slice_y++) { for (slice_x = 0; bufsize > 0 && slice_x < s->num_x; slice_x++) { - bytes = (slice_num+1) * s->lowdelay.bytes.num / s->lowdelay.bytes.den - - slice_num * s->lowdelay.bytes.num / s->lowdelay.bytes.den; + bytes = (slice_num+1) * (int64_t)s->lowdelay.bytes.num / s->lowdelay.bytes.den + - slice_num * (int64_t)s->lowdelay.bytes.num / s->lowdelay.bytes.den; slices[slice_num].bytes = bytes; slices[slice_num].slice_x = slice_x; slices[slice_num].slice_y = slice_y; |