Security vulnerabilities and automated fixes for runtime security issues
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A critical vulnerability in `runtime/zenith_runtime.c` allowed the `runtime_malloc()` function to accept negative size values, which when cast to an unsigned type could either trigger a massive failed allocation or produce a dangerously undersized buffer ripe for overflow. The fix adds a simple but essential guard clause that rejects non-positive sizes before they ever reach `malloc()`. Left unpatched, this class of bug can lead to heap metadata corruption, process crashes, or even arbitrary cod
A medium-severity vulnerability was recently patched in a Go workflow runtime system where code attempted to iterate over a potentially empty map without proper validation. While this may seem like a minor oversight, such patterns can lead to unexpected behavior, logic bugs, and in some cases, exploitable security vulnerabilities when combined with other code paths.