{"id":"RUSTSEC-2025-0125","summary":"Resource Exhaustion (Memory and Handle Leaks) on Windows and macOS","details":"Affected versions of this crate contain resource leaks when querying thread counts on Windows and Apple platforms.\n\n### Windows\nThe `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.\n\n### macOS / iOS\nThe `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.\n\n### Impact\nLong-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.\n\n### Mitigation\nUpgrade to version `0.2.2` or later, which properly releases OS resources.","aliases":["CVE-2025-65947","GHSA-jf9p-2fv9-2jp2"],"modified":"2025-11-22T12:29:36Z","published":"2025-11-22T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/thread-amount"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2025-0125.html"},{"type":"WEB","url":"https://github.com/jzeuzs/thread-amount/pull/29"}],"affected":[{"package":{"name":"thread-amount","ecosystem":"crates.io","purl":"pkg:cargo/thread-amount"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.2.2"}]}],"ecosystem_specific":{"affects":{"os":["windows","macos","ios"],"arch":[],"functions":["thread_amount::is_single_threaded","thread_amount::thread_amount"]},"affected_functions":null},"database_specific":{"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2025-0125.json","categories":["denial-of-service"],"informational":null,"cvss":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}