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Linux Kernel Huge Pages Memory Leak Denial of Service Vulnerability


Secunia ID

SA49191

CVE-ID

CVE-2012-2390

Release Date

24 May 2012

Last Change

11 Jun 2012

Criticality

Not Critical

Solution Status

Unpatched

Where

Local system

Impact
DoS (Denial of Service)

This includes vulnerabilities ranging from excessive resource consumption (e.g. causing a system to use a lot of memory) to crashing an application or an entire system.

Description

A vulnerability has been reported in Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service).

The vulnerability is caused due to a memory leak within the handling of huge pages and can be exploited to exhaust available memory resulting in various processes being terminated and a kernel panic.

Successful exploitation requires the kernel to be configured with the CONFIG_HUGETLB_PAGE feature.

Solution

Restrict access to trusted users only.

Reported by

Christoph Lameter

Original Advisory

Christoph Lameter:
http://marc.info/?l=linux-mm&m=133728900729735