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avcodec/aacpsdsp_template: Fix integer overflow in ps_hybrid_analysis_c() 

Fixes: signed integer overflow: -1539565182 + -798086761 cannot be represented in type 'int'
Fixes: 14807/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_FIXED_fuzzer-564925382682214

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 2019-06-13 15:00:14 +02:00
parent 3aecd01704
commit f8f5668df5
1 changed files with 4 additions and 4 deletions
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8
libavcodec/aacpsdsp_template.c
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@ -54,10 +54,10 @@ static void ps_hybrid_analysis_c(INTFLOAT (*out)[2], INTFLOAT (*in)[2],
INT64FLOAT sum_im = (INT64FLOAT)filter[i][6][0] * in[6][1];
for (j = 0; j < 6; j++) {
INTFLOAT in0_re = in[j][0];
INTFLOAT in0_im = in[j][1];
INTFLOAT in1_re = in[12-j][0];
INTFLOAT in1_im = in[12-j][1];
INT64FLOAT in0_re = in[j][0];
INT64FLOAT in0_im = in[j][1];
INT64FLOAT in1_re = in[12-j][0];
INT64FLOAT in1_im = in[12-j][1];
sum_re += (INT64FLOAT)filter[i][j][0] * (in0_re + in1_re) -
(INT64FLOAT)filter[i][j][1] * (in0_im - in1_im);
sum_im += (INT64FLOAT)filter[i][j][0] * (in0_im + in1_im) +