Commit 62c5949b authored by Michael Niedermayer's avatar Michael Niedermayer

avcodec/cllc: Check prefix

Fixes: runtime error: left shift of 1610706944 by 1 places cannot be represented in type 'int'
Fixes: 1421/clusterfuzz-testcase-minimized-6239947507892224

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpegSigned-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
parent 72810d20
......@@ -71,6 +71,10 @@ static int read_code_table(CLLCContext *ctx, GetBitContext *gb, VLC *vlc)
count++;
}
if (prefix > (65535 - 256)/2) {
vlc->table = NULL;
return AVERROR_INVALIDDATA;
}
prefix <<= 1;
}
......
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