linux-kernel - Re: [PATCH] [netfilter]: Fix skb->csum calculation when netfilter manipulation for NF_NAT_MANIP

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 for Android: free password hash cracker in your pocket

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

Date:   Tue, 29 Oct 2019 17:09:23 +0100
From:   Florian Westphal <fw@...len.de>
To:     Praveen Chaudhary <praveen5582@...il.com>
Cc:     davem@...emloft.net, fw@...len.de, kadlec@...filter.org,
        pablo@...filter.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Zhenggen Xu <zxu@...kedin.com>,
        Andy Stracner <astracner@...kedin.com>
Subject: Re: [PATCH] [netfilter]: Fix skb->csum calculation when netfilter
 manipulation for NF_NAT_MANIP_SRC\DST is done on IPV6 packet.

Praveen Chaudhary <praveen5582@...il.com> wrote:
> No need to update skb->csum in function inet_proto_csum_replace16(),
> even if skb->ip_summed == CHECKSUM_COMPLETE, because change in L4
> header checksum field and change in IPV6 header cancels each other
> for skb->csum calculation.

Can you resend this and submit this patch to
netfilter-devel@...r.kernel.org?

You may add:
Reviewed-by: Florian Westphal <fw@...len.de>