netdev - Re: [PATCH] ipv6: Fix the pmtu path for connected UDP socket

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 linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Wed, 16 Mar 2016 22:38:03 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	weiwan@...gle.com, edumazet@...gle.com, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv6: Fix the pmtu path for connected UDP socket

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 16 Mar 2016 17:22:07 -0700

> One of the issue is that IPV6_MTU getsockopt() will not check the dst,
> but simply use __sk_dst_get() : It will then report old mtu.

That's a bug.

ipv4 does it right with a proper sk_dst_get() and so should
ipv6.