From: Jakub Kicinski <kuba@kernel.org>
To: Pablo Neira Ayuso <pablo@netfilter.org>, Greg KH <greg@kroah.com>,
Stephen Rothwell <sfr@canb.auug.org.au>
Cc: netfilter-devel@vger.kernel.org, davem@davemloft.net,
netdev@vger.kernel.org
Subject: Re: [PATCH 1/6] netfilter: ipset: fix suspicious RCU usage in find_set_and_id
Date: Sat, 1 Feb 2020 12:57:36 -0800 [thread overview]
Message-ID: <20200201125736.453a0fec@cakuba.hsd1.ca.comcast.net> (raw)
In-Reply-To: <20200131192428.167274-2-pablo@netfilter.org>
On Fri, 31 Jan 2020 20:24:23 +0100, Pablo Neira Ayuso wrote:
> From: Kadlecsik József <kadlec@blackhole.kfki.hu>
>
> find_set_and_id() is called when the NFNL_SUBSYS_IPSET mutex is held.
> However, in the error path there can be a follow-up recvmsg() without
> the mutex held. Use the start() function of struct netlink_dump_control
> instead of dump() to verify and report if the specified set does not
> exist.
>
> Thanks to Pablo Neira Ayuso for helping me to understand the subleties
> of the netlink protocol.
>
> Reported-by: syzbot+fc69d7cb21258ab4ae4d@syzkaller.appspotmail.com
> Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This will trigger a missing signed-off-by check:
Commit 5038517119d5 ("netfilter: ipset: fix suspicious RCU usage in find_set_and_id")
author Signed-off-by missing
author email: kadlec@blackhole.kfki.hu
committer email: pablo@netfilter.org
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Problem is that the name differs by 'o' vs 'ó' (József Kadlecsik).
I wonder if it's worth getting rid of diacritics for the comparison..
next prev parent reply other threads:[~2020-02-01 20:57 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-31 19:24 [PATCH 0/6] Netfilter fixes for net Pablo Neira Ayuso
2020-01-31 19:24 ` [PATCH 1/6] netfilter: ipset: fix suspicious RCU usage in find_set_and_id Pablo Neira Ayuso
2020-02-01 20:57 ` Jakub Kicinski [this message]
2020-02-01 21:05 ` Jakub Kicinski
2020-02-01 21:11 ` Jozsef Kadlecsik
2020-02-02 4:21 ` Jakub Kicinski
2020-01-31 19:24 ` [PATCH 2/6] netfilter: Use kvcalloc Pablo Neira Ayuso
2020-01-31 19:24 ` [PATCH 3/6] netfilter: flowtable: Fix hardware flush order on nf_flow_table_cleanup Pablo Neira Ayuso
2020-01-31 19:24 ` [PATCH 4/6] netfilter: flowtable: Fix missing flush hardware on table free Pablo Neira Ayuso
2020-01-31 19:24 ` [PATCH 5/6] netfilter: flowtable: Fix setting forgotten NF_FLOW_HW_DEAD flag Pablo Neira Ayuso
2020-01-31 19:24 ` [PATCH 6/6] netfilter: nf_flowtable: fix documentation Pablo Neira Ayuso
2020-02-01 20:59 ` [PATCH 0/6] Netfilter fixes for net Jakub Kicinski
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