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Secunia Advisory SA25682

Linux Kernel "compat_sys_mount()" Denial of Service Security Issue
Secunia Advisory SA25682
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Release Date 2007-06-15
   
Popularity 11,986 views
Comments 0 comments

Criticality level Not criticalNot critical
Impact DoS
Where Local system
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Operating System
Linux Kernel 2.6.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2006-7203 CVSS available in Customer Area
  

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/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=822191a2fa1584a29c3224ab328507adcaeac1ab

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Linux Kernel "compat_sys_mount()" Denial of Service Security Issue
 
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