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GHSA-jf9p-2fv9-2jp2

thread-amount Vulnerable to Resource Exhaustion (Memory and Handle Leaks) on Windows and macOS

Source: GitHub Advisory Database (reviewed) High CVE-2025-65947

Packages

EcosystemPackageAffectedFixed in
crates.io thread-amount < 0.2.2 0.2.2

Details

As written in the advisory (Markdown source, shown as plain text).

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

References

External links from the advisory. They lead to third-party sites.