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From: Aaron Conole <>
To: Hyunwoo Kim <>
Subject: Re: [ovs-dev] [PATCH] net: openvswitch: Fix Use-After-Free in ovs_ct_exit
Date: Wed, 24 Apr 2024 10:58:59 -0400	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <ZiYvzQN/Ry5oeFQW@v4bel-B760M-AORUS-ELITE-AX> (Hyunwoo Kim's message of "Mon, 22 Apr 2024 05:37:17 -0400")

Hyunwoo Kim <> writes:

> Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal
> of ovs_ct_limit_exit, is not part of the RCU read critical section, it
> is possible that the RCU grace period will pass during the traversal and
> the key will be free.
> To prevent this, it should be changed to hlist_for_each_entry_safe.
> Fixes: 11efd5cb04a1 ("openvswitch: Support conntrack zone limit")
> Signed-off-by: Hyunwoo Kim <>
> ---

Reviewed-by: Aaron Conole <>

  parent reply	other threads:[~2024-04-24 14:59 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-22  9:37 [PATCH] net: openvswitch: Fix Use-After-Free in ovs_ct_exit Hyunwoo Kim
2024-04-22 10:40 ` Eric Dumazet
2024-04-24 14:58 ` Aaron Conole [this message]
2024-04-25  2:40 ` patchwork-bot+netdevbpf

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