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implement stricter integer overflow check #3156

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implement stricter integer overflow check #3156

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iwashiira
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fix #3143
modify #3133 #3134

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iwashiira commented Jul 16, 2024 •
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@lws-team
After further research, we found that the integer overflow check in #3134 is still insufficient and a heap-base buffer overflow is possible.
We would like to kindly request your review and merge of this request.
🙏

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heap buffer overflow is found in upng.c
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