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avutil/tx: Use unsigned in ff_tx_fft_sr_combine() to avoid undefined behavior

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Fixes: signed integer overflow: -1284837070 - 982101618 cannot be represented in type 'int'
Fixes: 53105/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AC3_FIXED_fuzzer-4848015827664896

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
2022-11-21 00:20:14 +01:00
parent 90c17a05aa
commit 7792825ad6
2 changed files with 4 additions and 1 deletions
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libavutil/tx_template.c
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@@ -563,7 +563,7 @@ static inline void TX_NAME(ff_tx_fft_sr_combine)(TXComplex *z,
int o2 = 4*len;
int o3 = 6*len;
const TXSample *wim = cos + o1 - 7;
TXSample t1, t2, t3, t4, t5, t6, r0, i0, r1, i1;
TXUSample t1, t2, t3, t4, t5, t6, r0, i0, r1, i1;
for (int i = 0; i < len; i += 4) {
TRANSFORM(z[0], z[o1 + 0], z[o2 + 0], z[o3 + 0], cos[0], wim[7]);