CVE-2026-45699: Buffer Remaining Size Strlen Underflow
Remaining buffer capacity is calculated using `strlen(...)` instead of `sizeof(...)` or the buffer capacity. When the string length in the buffer equals the subtracted length, this subtraction underflows unsigned integers, bypassing subsequent bounds checks and causing buffer overflows.
Cgreprules fetch cve-2026-45699-buffer-remaining-size-strlen-underflow --engine opengrepDescription
Remaining buffer capacity is calculated using `strlen(...)` instead of `sizeof(...)` or the buffer capacity. When the string length in the buffer equals the subtracted length, this subtraction underflows unsigned integers, bypassing subsequent bounds checks and causing buffer overflows.
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