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avcodec/mlpdec: Fix: runtime error: left shift of negative value -8

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Fixes: 1658/clusterfuzz-testcase-minimized-4889937130291200

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-18 02:07:17 +02:00
parent 58ac7fb9c3
commit 25c81e4b73
1 changed files with 1 additions and 1 deletions
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2
libavcodec/mlpdec.c
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@ -759,7 +759,7 @@ static int read_matrix_params(MLPDecodeContext *m, unsigned int substr, GetBitCo
if (get_bits1(gbp)) if (get_bits1(gbp))
coeff_val = get_sbits(gbp, frac_bits + 2); coeff_val = get_sbits(gbp, frac_bits + 2);
s->matrix_coeff[mat][ch] = coeff_val << (14 - frac_bits); s->matrix_coeff[mat][ch] = coeff_val * (1 << (14 - frac_bits));
} }
if (s->noise_type) if (s->noise_type)