CVE-2001-1559 Null dereference in n/a

Medium 5.5 Published 14 Jul 2005 Updated 16 Sep 2024

Local users can cause a denial of service in OpenBSD via a null dereference in the uipc system calls due to incorrect return value handling.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2001-1559?

CVE-2001-1559 is a medium-severity vulnerability in Openbsd Openbsd, published on 14 Jul 2005. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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: CWE-476

Which versions are affected by CVE-2001-1559?

It affects 1 product.

Products include Openbsd Openbsd.

How do I fix CVE-2001-1559?

No fix has been published for CVE-2001-1559 yet. Limit exposure of the affected software until one is available.

Is CVE-2001-1559 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2001-1559 exists.

Public exploit code: 1 Exploit-DB entry.

All Openbsd Openbsd vulnerabilities

Sources

Also known as GHSA-c4g9-53v4-f2qg.