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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-10 00:50:05 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-23 13:15:17 +0200 |
| commit | 61e69cbb618f3d19ec678c87cd244b907d8b8462 (patch) | |
| tree | 16d819c23d89aa0ac50ef6cf2d5fcfb129a38c84 | |
| parent | 5817946f52fa53a60fde0d30833bc64cef1f2cb0 (diff) | |
| download | ffmpeg-61e69cbb618f3d19ec678c87cd244b907d8b8462.tar.gz | |
avcodec/lagarith: Fix runtime error: left shift of negative value -1
Fixes: 1424/clusterfuzz-testcase-minimized-6088327159611392
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit ddb2dd7edbccc5596d8e3c039133be8444cb1d02)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/lagarith.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c index a08d7fde1b..0a672f83ca 100644 --- a/libavcodec/lagarith.c +++ b/libavcodec/lagarith.c @@ -98,7 +98,7 @@ static uint32_t softfloat_mul(uint32_t x, uint64_t mantissa) static uint8_t lag_calc_zero_run(int8_t x) { - return (x << 1) ^ (x >> 7); + return (x * 2) ^ (x >> 7); } static int lag_decode_prob(GetBitContext *gb, uint32_t *value) |