Security vulnerabilities and automated fixes for compiler security issues
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A high-severity vulnerability in `src/parser/koala.l` allowed an attacker to craft a malicious `.kl` source file that, when parsed by the Koala compiler, could trigger a chain of memory safety bugs — integer overflow, use-after-free, and out-of-bounds access — ultimately enabling arbitrary code execution at the privilege level of the compiler process. The fix introduces strict input validation guards that break this exploitation chain before it can begin. This is a reminder that parsers and comp
A critical buffer overflow vulnerability was discovered and patched in `src/core/hir.c`, where an unchecked `strcpy()` call allowed attacker-controlled input to overflow heap or stack buffers during source code processing. This class of vulnerability — catalogued as CWE-120 — is one of the oldest and most dangerous bugs in systems programming, and its presence in a compiler or language toolchain pipeline makes it especially severe. The fix eliminates the unsafe copy operation, closing a potentia