Security Advisory SA47486 - Linux Kernel DRM "drm_mode_dirtyfb_ioctl()" Integer Overflow Vulnerability

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Secunia Advisory SA47486

Linux Kernel DRM "drm_mode_dirtyfb_ioctl()" Integer Overflow Vulnerability

Secunia Advisory

SA47486

Release Date

2012-01-11

Last Update

2012-01-13

Popularity

1,448 view

Comments

0 comments

Criticality level

Less critical

Impact

Privilege escalation
DoS

Where

Local system

Authentication level

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Solution Status

Vendor Workaround

Systems affected

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Approve distribution

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Operating System

Linux Kernel 2.6.x

Secunia CVSS Score

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CVE Reference(s)

CVE-2012-0044 CVSS score available to Secunia VIM customers

Description

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

The vulnerability is caused due to an integer overflow error within the "drm_mode_dirtyfb_ioctl()" function (drivers/gpu/drm/crm_crtc.c) and can be exploited to cause a memory corruption by sending specially crafted IOCTLs.

Solution
Fixed in the GIT repository.

Provided and/or discovered by
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a5cd335165e31db9dbab636fd29895d41da55dd2

Changelog
Further details available to Secunia VIM customers

Original Advisory
Haogang Chen

Deep Links
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Subject: Linux Kernel DRM "drm_mode_dirtyfb_ioctl()" Integer Overflow Vulnerability

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Secunia Advisory SA47486

Linux Kernel DRM "drm_mode_dirtyfb_ioctl()" Integer Overflow Vulnerability

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