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Re: security problem in ESP fragment handling?


From: Marcus Meissner <meissner () suse de>
Date: Wed, 30 Apr 2008 16:58:44 +0200

On Wed, Apr 30, 2008 at 10:21:18AM -0400, Steven M. Christey wrote:

On Wed, 30 Apr 2008, Marcus Meissner wrote:

According to Karsten Keil just ESP fragment packets need to be accepted
by the kernel to trigger the condition.
We think this might be true for all 2.6 kernels (ever since esp.c got added)

Any idea what the starting version might be?

2.6.0 (introduced during 2.5 development).
 
Also, you mentioned a hang, but the commit says a BUG() is generated.  is
this just based on different inputs?

I think the BUG() will kill the network event handler thread, but I let
the experts comment here.

Ciao, Marcus


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