netdev - Re: [PATCH ipsec] xfrmi: drop ignore

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] [day] [month] [year] [list]

Date:   Thu, 27 Aug 2020 09:08:47 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     Sabrina Dubroca <sd@...asysnail.net>
CC:     <netdev@...r.kernel.org>, Xiumei Mu <xmu@...hat.com>
Subject: Re: [PATCH ipsec] xfrmi: drop ignore_df check before updating pmtu

On Tue, Aug 04, 2020 at 11:37:29AM +0200, Sabrina Dubroca wrote:
> xfrm interfaces currently test for !skb->ignore_df when deciding
> whether to update the pmtu on the skb's dst. Because of this, no pmtu
> exception is created when we do something like:
> 
>     ping -s 1438 <dest>
> 
> By dropping this check, the pmtu exception will be created and the
> next ping attempt will work.
> 
> Fixes: f203b76d7809 ("xfrm: Add virtual xfrm interfaces")
> Reported-by: Xiumei Mu <xmu@...hat.com>
> Signed-off-by: Sabrina Dubroca <sd@...asysnail.net>

Patch applied, thanks Sabrina!