{"id":"GHSA-jf9p-2fv9-2jp2","summary":"thread-amount Vulnerable to 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### Resources\n\n- https://github.com/jzeuzs/thread-amount/pull/29","aliases":["CVE-2025-65947","RUSTSEC-2025-0125"],"modified":"2025-11-27T08:16:21.759428Z","published":"2025-11-21T18:19:40Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-11-21T18:19:40Z","nvd_published_at":"2025-11-21T23:15:45Z","cwe_ids":["CWE-400","CWE-772"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/jzeuzs/thread-amount/security/advisories/GHSA-jf9p-2fv9-2jp2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-65947"},{"type":"WEB","url":"https://github.com/jzeuzs/thread-amount/pull/29"},{"type":"WEB","url":"https://github.com/jzeuzs/thread-amount/commit/28860d4a38286609cb884c13b5b7941edc2390e5"},{"type":"PACKAGE","url":"https://github.com/jzeuzs/thread-amount"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2025-0125.html"}],"affected":[{"package":{"name":"thread-amount","ecosystem":"crates.io","purl":"pkg:cargo/thread-amount"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.2.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-jf9p-2fv9-2jp2/GHSA-jf9p-2fv9-2jp2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}