Potential fix for code scanning alert no. 3239: Multiplication result converted to larger type#135
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Potential fix for code scanning alert no. 3239: Multiplication result converted to larger type#135bniladridas wants to merge 1 commit into
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… converted to larger type Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
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☑️ I checked the pre-commit hooks and there was nothing to fix at commit |
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Combines all 15 automated code scanning alert fixes for multiplication result converted to larger type. These changes span `include/stb_image.h`, `include/stb_image_write.h`, and `src/preprocess.c` with consistent application of `size_t` casts to prevent integer overflow before conversion to larger types. Overflow checks are added where allocation sizes are stored back into `int` variables such as `out_size`. > [!NOTE] > Merging this pull request will automatically close #125, #126, #127, #128, #129, #130, #131, #132, #133, #134, #135, #136, #137, #138, #139 --------- Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com> Co-authored-by: Niladri Das <bniladridas@users.noreply.github.com>
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Fixed in #140 |
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Potential fix for https://github.com/bniladridas/hybrid-compute/security/code-scanning/3239
To fix this safely, ensure the multiplication is performed in
size_tfrom the start by casting one operand before multiplication. That prevents intermediateintoverflow and preserves behavior.Best minimal fix in
include/stb_image.hat thememsetcall instbi__pic_load:memset(result, 0xff, x * y * 4);memset(result, 0xff, (size_t)x * (size_t)y * 4u);This keeps functionality the same (fill allocated RGBA buffer with
0xff) while making arithmetic type-safe. No new imports/dependencies are needed.Suggested fixes powered by Copilot Autofix. Review carefully before merging.