netdev - Re: [PATCH net] net/route: enforce hoplimit max value

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sat, 14 May 2016 15:34:55 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	pabeni@...hat.com
Cc:	netdev@...r.kernel.org, kuznet@....inr.ac.ru,
	hannes@...essinduktion.org
Subject: Re: [PATCH net] net/route: enforce hoplimit max value

From: Paolo Abeni <pabeni@...hat.com>
Date: Fri, 13 May 2016 18:33:41 +0200

> Currently, when creating or updating a route, no check is performed
> in both ipv4 and ipv6 code to the hoplimit value.
> 
> The caller can i.e. set hoplimit to 256, and when such route will
>  be used, packets will be sent with hoplimit/ttl equal to 0.
> 
> This commit adds checks for the RTAX_HOPLIMIT value, in both ipv4
> ipv6 route code, substituting any value greater than 255 with 255.
> 
> This is consistent with what is currently done for ADVMSS and MTU
> in the ipv4 code.
> 
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>

Applied, thanks for fixing this.