Re: [PATCH] Freeing dst when the reference count <0 causes general protection fault, it could be a major security flaw as rogue app can modify dst to crash kernel.

[David Miller]

From: Shakil k <shakilk1729@xxxxxxxxx>
Date: Sat, 13 Sep 2014 10:46:39 -0700

> On Sat, Sep 13, 2014 at 4:50 AM, Eric Dumazet <eric.dumazet@xxxxxxxxx>
> wrote:
> 
>> Can you describe how this could trigger with a pristine kernel ?
>> This can be reproduced with our custom network traffic to simulate malware.
>>
> Point is the user can modify certain packets and can cause a kernel crash
> causing blackout to all the linux boxes hosting services :(

Eric is kindly asking you exactly how to reproduce the crash, so he
can 1) fix it and 2) generate a test case that gets run all the time
in the future.

Please answer his question directly instead of steering the conversation
endless towards other aspects.
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