CVE-2026-41509: Unchecked Sizeof Underflow To Memcpycve-2026-41509-unchecked-sizeof-underflow-to-memcpy
Unchecked subtraction of `sizeof` from a length variable before a memory copy operation. This can lead to integer underflow if the length is smaller than the `sizeof` value, causing an out-of-bounds read/write when passed to `memcpy` or `memmove`. Always validate the length before subtraction.