From: patchwork-bot+netdevbpf@kernel.org
To: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: netdev@vger.kernel.org, stable@vger.kernel.org, vega@nebusec.ai,
victor@mojatatu.com, dcaratti@redhat.com, jiri@resnulli.us,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org
Subject: Re: [PATCH net] net/sched: act_api: fix TOCTOU NULL deref on a->goto_chain
Date: Wed, 12 Aug 2026 01:30:13 +0000 [thread overview]
Message-ID: <178649821363.1227528.5392526569605009176.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260809090928.868186-1-jhs@mojatatu.com>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Sun, 9 Aug 2026 05:09:28 -0400 you wrote:
> tcf_action_exec() handles TC_ACT_GOTO_CHAIN by first checking
> rcu_access_pointer(a->goto_chain) and then calling
> tcf_action_goto_chain_exec(), which does a second, independent
> rcu_dereference_bh(a->goto_chain) read and immediately dereferences
> chain->filter_chain. A concurrent tcf_action_set_ctrlact() (e.g. the gact
> replace path) can clear a->goto_chain between the two reads, so the second
> read returns NULL and tcf_action_goto_chain_exec() dereferences NULL.
>
> [...]
Here is the summary with links:
- [net] net/sched: act_api: fix TOCTOU NULL deref on a->goto_chain
https://git.kernel.org/netdev/net/c/f60b396ee174
You are awesome, thank you!
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next prev parent reply other threads:[~2026-08-12 1:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-09 9:09 [PATCH net] net/sched: act_api: fix TOCTOU NULL deref on a->goto_chain Jamal Hadi Salim
2026-08-10 7:57 ` Davide Caratti
2026-08-10 23:45 ` Jakub Kicinski
2026-08-11 10:43 ` Jamal Hadi Salim
2026-08-11 15:32 ` Jakub Kicinski
2026-08-12 1:30 ` patchwork-bot+netdevbpf [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-08-09 9:07 Jamal Hadi Salim
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