CVE-2025-65947 — Vulnerability in thread-amount — CVE Details

Affected versions of this crate contain resource leaks when querying thread counts on Windows and Apple platforms. ### Windows The `thread_amount` function calls `CreateToolhelp32Snapshot` but fails to close the returned `HANDLE` using `CloseHandle`. Repeated calls to this function will cause the handle count of the process to grow indefinitely, eventually leading to system instability or process termination when the handle limit is reached. ### macOS / iOS The `thread_amount` function calls `task_threads` (via Mach kernel APIs) which allocates memory for the thread list. The function fails to deallocate this memory using `vm_deallocate`. Repeated calls will result in a steady memory leak, eventually causing the process to be killed by the OOM (Out of Memory) killer. ### Impact Long-running applications (such as servers, daemons, or monitoring tools) that use this crate to periodically check thread counts will eventually crash due to resource exhaustion. ### Resources - https://github.com/jzeuzs/thread-amount/pull/29