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Linux Kernel "compat_sys_mount()" Denial of Service Security Issue
Secunia Advisory: SA25682
Release Date: 2007-06-15
Popularity: 7,494 views

Critical:
Not critical
Impact: DoS
Where: Local system
Solution Status: Vendor Patch

OS:Linux Kernel 2.6.x

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CVE reference:CVE-2006-7203


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

The security issue is caused due to a NULL pointer dereference error in the "compat_sys_mount()" function in fs/compat.c, which can be exploited to crash a vulnerable system by mounting an smbfs file system in compatibility mode.

Solution:
Update to version 2.6.21.1 or later.

Provided and/or discovered by:
OpenVZ Linux Kernel Team

Original Advisory:
http://git.kernel.org/?p=linux/kernel...191a2fa1584a29c3224ab328507adcaeac1ab


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