VULNERABILITY INTELLIGENCE

CVE-2001-1559

CVSS score5.5 MEDIUM
EPSS probability1.48%
CISA KEVNot currently listed
Published2001-12-31
Last modified2026-06-16
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-476: NULL Pointer Dereference

Primary references