Medium severity5.5NVD Advisory· Published Dec 31, 2001· Updated Apr 16, 2026

CVE-2001-1559

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/OpenBSD2 versions
cpe:2.3:o:openbsd:openbsd:2.9:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:openbsd:openbsd:2.9:*:*:*:*:*:*:*
- cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

archives.neohapsis.com/archives/bugtraq/2001-12/0014.htmlnvdBroken LinkExploit
monkey.org/openbsd/archive/tech/0112/msg00015.htmlnvdBroken LinkExploit
www.iss.net/security_center/static/7690.phpnvdBroken Link

News mentions

No linked articles in our index yet.

cvss	0.358
epss	0.000
exploit	0.030
kev	0.000
patch	0.000
ransomware	0.000