netdev - Re: Null pointer dereference in icmp

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Message-Id: <20110516.172258.454975314148851877.davem@davemloft.net>
Date:	Mon, 16 May 2011 17:22:58 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	joystick@...a.sec.dico.unimi.it
Cc:	netdev@...r.kernel.org, roberto.paleari@...ze.net
Subject: Re: Null pointer dereference in icmp_send

From: Aristide Fattori <joystick@...a.sec.dico.unimi.it>
Date: Mon, 16 May 2011 23:06:32 +0200

> in function icmp_send() (net/ipv4/icmp.c), the parameter passed to
> dev_net() function is not properly validated.

It doesn't need to be.

If 'rt' is not NULL, then rt->dst.dev is always not NULL and
therefore no checks are necessary.
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