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Linux Kernel "atalk_sum_skb()" AppleTalk Denial of Service

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Release Date:  2007-04-10    Last Update:  2007-04-12    Views:  12,041

Secunia Advisory SA24793

Where:

From local network

Impact:

DoS

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


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

The vulnerability is caused due to an error within the "atalk_sum_skb()" function when creating the checksum of an AppleTalk frame that is shorter than specified in the header. This can be exploited to trigger a "BUG_ON" condition by sending a specially crafted AppleTalk frame to a vulnerable system.

Successful exploitation requires that the AppleTalk kernel module is loaded.


Solution:
Update to version 2.6.20.5.

Provided and/or discovered by:
Philipp Richter

Original Advisory:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.5
http://bugzilla.kernel.org/show_bug.cgi?id=2979

Deep Links:
Links available to Secunia VIM customers

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 "atalk_sum_skb()" AppleTalk Denial of Service

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