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avcodec/apedec: Add k < 24 check to the only k++ case which lacks such a check

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Fixes: 15255/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5718831688843264
Fixes: left shift of 1 by 31 places cannot be represented in type 'int'

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 2019-06-16 11:26:57 +02:00
parent 0334632d5c
commit 3d4f4f4a15
1 changed files with 1 additions and 1 deletions
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libavcodec/apedec.c
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@ -460,7 +460,7 @@ static inline void update_rice(APERice *rice, unsigned int x)
if (rice->ksum < lim)
rice->k--;
else if (rice->ksum >= (1 << (rice->k + 5)))
else if (rice->ksum >= (1 << (rice->k + 5)) && rice->k < 24)
rice->k++;
}