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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-11 23:06:50 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-11 23:55:59 +0200 |
| commit | d05bdba2428dd0c1c5cd3426d69c712b127f996c (patch) | |
| tree | 28ed90471cbd8b5613660f74387760ec51cb2c54 | |
| parent | 2752410c47889a94778a541c09ed29ccce8a8de9 (diff) | |
avcodec/mss3: Fix runtime error: signed integer overflow: -2146318336 - 2139696256 cannot be represented in type 'int'
Fix is similar to rac_get_model_sym()
Fixes: 1483/clusterfuzz-testcase-minimized-6386507814273024
Fixes: 1485/clusterfuzz-testcase-minimized-6639880215986176
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mss3.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/mss3.c b/libavcodec/mss3.c index 81b7e2017c..21226f9085 100644 --- a/libavcodec/mss3.c +++ b/libavcodec/mss3.c @@ -389,9 +389,10 @@ static int rac_get_model_sym(RangeCoder *c, Model *m) static int rac_get_model256_sym(RangeCoder *c, Model256 *m) { - int prob, prob2, helper, val; + int val; int start, end; int ssym; + unsigned prob, prob2, helper; prob2 = c->range; c->range >>= MODEL_SCALE; |