netdev - Re: [PATCH net] ipv6: fix general protection fault in fib6

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: <20180104.143003.729989900723159013.davem@davemloft.net>
Date:   Thu, 04 Jan 2018 14:30:03 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     weiwan@...gle.com
Cc:     netdev@...r.kernel.org, kafai@...com, dsahern@...il.com
Subject: Re: [PATCH net] ipv6: fix general protection fault in fib6_add()

From: Wei Wang <weiwan@...gle.com>
Date: Wed,  3 Jan 2018 14:11:59 -0800

> From: Wei Wang <weiwan@...gle.com>
> 
> In fib6_add(), pn could be NULL if fib6_add_1() failed to return a fib6
> node. Checking pn != fn before accessing pn->leaf makes sure pn is not
> NULL.
> This fixes the following GPF reported by syzkaller:
 ...
> Reported-by: syzbot <syzkaller@...glegroups.com>
> Fixes: 66f5d6ce53e6 ("ipv6: replace rwlock with rcu and spinlock in fib6_table")
> Signed-off-by: Wei Wang <weiwan@...gle.com>

Applied, thanks.