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avcodec/jfdctint_template: use unsigned z* in row_fdct()

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Fixes: signed integer overflow: 856827136 + 2123580416 cannot be represented in type 'int'
Fixes: 70772/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PRORES_KS_fuzzer-5180569961431040

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit f27c8b04d3)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2024-09-19 21:57:09 +02:00
parent 95777d2e5f
commit 47b03916d2
1 changed files with 1 additions and 1 deletions
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libavcodec/jfdctint_template.c
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@@ -188,7 +188,7 @@ static av_always_inline void FUNC(row_fdct)(int16_t *data)
{
int tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
int tmp10, tmp11, tmp12, tmp13;
int z1, z2, z3, z4, z5;
unsigned z1, z2, z3, z4, z5;
int16_t *dataptr;
int ctr;