What’s Vulnerable › Vulnerabilities

CVE-2001-1559

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2001-12-31 · updated 2026-06-16
• Weakness: CWE-476

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.

Affected products

• OpenBSD: 2.9, 3.0

References

• http://archives.neohapsis.com/archives/bugtraq/2001-12/0014.html
• http://monkey.org/openbsd/archive/tech/0112/msg00015.html
• http://www.iss.net/security_center/static/7690.php
• http://archives.neohapsis.com/archives/bugtraq/2001-12/0014.html
• http://monkey.org/openbsd/archive/tech/0112/msg00015.html
• http://www.iss.net/security_center/static/7690.php

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