CVE-2026-79771: Ruby C Ext Stringvaluecstr Leak On Raise
Heap memory is allocated before calling `StringValueCStr` without exception protection. If `StringValueCStr` encounters null bytes or invalid types, it raises a Ruby exception via `longjmp`, skipping deallocation and leaking the allocated memory. Wrap the conversion in `rb_protect` or convert strings before allocating heap memory.
Cgreprules fetch cve-2026-79771-ruby-c-ext-stringvaluecstr-leak-on-raise --engine opengrepDescription
Heap memory is allocated before calling `StringValueCStr` without exception protection. If `StringValueCStr` encounters null bytes or invalid types, it raises a Ruby exception via `longjmp`, skipping deallocation and leaking the allocated memory. Wrap the conversion in `rb_protect` or convert strings before allocating heap memory.
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