bugtraq - NetBSD kernel swapctl(2) vulnerability

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Message-ID: <web-43718618@cgp.agava.net>
Date: Fri, 11 Jun 2004 13:20:06 +0400
From: "Evgeny Demidov" <demidov@...g.net>
To: full-disclosure@...ts.netsys.com
Cc: bugtraq@...urityfocus.com, security-officer@...bsd.org
Subject: NetBSD kernel swapctl(2) vulnerability

Name:          NetBSD kernel swapctl(2) vulnerability
Date:          11 June 2004
CVE candidate: not assigned
Author:        Evgeny Demidov

Description:

There exists a integer handling vulnerability in NetBSD 
swapctl(2) system call.
It seems that this vulnerability can not be exploited to 
gain super-user
privilegies, but any local attacker can crash the kernel.

Fix:

It is available in CVS: 
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/uvm/uvm_swap.c.diff?r1=1.85&r2=1.85.2.1

History:

The vulnerability has been discovered several months ago 
by Evgeny Demidov during NetBSD kernel source code au
dit.
It has been made availabe to VulnDisco clients two months 
ago.

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