CVE-2001-1559 — MEDIUM severity vulnerability (The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3)
The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial of service and trigger a null dereference.
| CVE ID | CVE-2001-1559 |
|---|---|
| Severity | MEDIUM |
| CVSS score | 5.5 |
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CWE | CWE-476 |
| Status | Modified |
| Published | 2001-12-31 |
| Last modified | 2026-04-16 |
| Description | The uipc system calls (uipc_syscalls.c) in OpenBSD 2.9 and 3.0 provide user mode return instead of versus rval kernel mode values to the fdrelease function, which allows local users to cause a denial of service and trigger a null dereference. |
| Source | NIST National Vulnerability Database |
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