CVE-2026-42046: Improper Multiplication Overflow Check
Checking for integer overflow after a multiplication has occurred can lead to undefined behavior if the variables are signed. Modern compilers may optimize away these checks since signed integer overflow is undefined. To prevent this, verify that the operation will not overflow before performing it, using division (e.g., `if (X != 0 && Y > INT_MAX / X)`).
Cgreprules fetch cve-2026-42046-improper-multiplication-overflow-check --engine opengrepDescription
Checking for integer overflow after a multiplication has occurred can lead to undefined behavior if the variables are signed. Modern compilers may optimize away these checks since signed integer overflow is undefined. To prevent this, verify that the operation will not overflow before performing it, using division (e.g., `if (X != 0 && Y > INT_MAX / X)`).
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