CVE-2026-58469: Backward Pointer Underread
A backward-searching loop decrements a pointer while inspecting its preceding character, but lacks a lower-bound check. This can lead to a heap buffer underread if the expected stopping character is absent. Ensure the pointer is checked against the start of the buffer (e.g., `ptr > start`) before dereferencing.
Cgreprules fetch cve-2026-58469-backward-pointer-underread --engine opengrepDescription
A backward-searching loop decrements a pointer while inspecting its preceding character, but lacks a lower-bound check. This can lead to a heap buffer underread if the expected stopping character is absent. Ensure the pointer is checked against the start of the buffer (e.g., `ptr > start`) before dereferencing.
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