linux-kernel - Re: [PATCH] ipv4, ipv6: ensure raw socket message is big enough to hold an IP header

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]

Message-Id: <20170504.110745.1166031278249644101.davem@davemloft.net>
Date:   Thu, 04 May 2017 11:07:45 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     glider@...gle.com
Cc:     dvyukov@...gle.com, kcc@...gle.com, edumazet@...gle.com,
        kuznet@....inr.ac.ru, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] ipv4, ipv6: ensure raw socket message is big enough to
 hold an IP header

From: Alexander Potapenko <glider@...gle.com>
Date: Wed,  3 May 2017 17:06:58 +0200

> raw_send_hdrinc() and rawv6_send_hdrinc() expect that the buffer copied
> from the userspace contains the IPv4/IPv6 header, so if too few bytes are
> copied, parts of the header may remain uninitialized.
> 
> This bug has been detected with KMSAN.
> 
> Signed-off-by: Alexander Potapenko <glider@...gle.com>

Applied and queued up for -stable, thanks.