From: patchwork-bot+netdevbpf@kernel.org
To: Weiming Shi <bestswngs@gmail.com>
Cc: vinicius.gomes@intel.com, jhs@mojatatu.com, jiri@resnulli.us,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org, vladimir.oltean@nxp.com,
shuah@kernel.org, xmei5@asu.edu, netdev@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH net v5 0/2] net/sched: taprio: fix NULL pointer dereference in class dump
Date: Tue, 28 Apr 2026 01:50:12 +0000 [thread overview]
Message-ID: <177734101277.196918.11456842228580431598.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260422161958.2517539-2-bestswngs@gmail.com>
Hello:
This series was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Thu, 23 Apr 2026 00:19:57 +0800 you wrote:
> Fix a NULL pointer dereference in taprio_dump_class() reachable by an
> unprivileged local user on kernels with unprivileged user namespaces
> enabled and CONFIG_NET_SCH_TAPRIO=y. The bug allows a local DoS via a
> crafted sequence of taprio child-qdisc graft, delete, and class dump.
>
> Patch 1/2 is the fix: replace NULL entries in q->qdiscs[] with the
> global &noop_qdisc singleton so that control-plane dump paths, as well
> as the existing NULL guards in the data-plane enqueue/dequeue paths,
> cannot deref a NULL child qdisc.
>
> [...]
Here is the summary with links:
- [net,v5,1/2] net/sched: taprio: fix NULL pointer dereference in class dump
https://git.kernel.org/netdev/net/c/3d07ca5c0fae
- [net,v5,2/2] selftests/tc-testing: add taprio test for class dump after child delete
https://git.kernel.org/netdev/net/c/a469feed399d
You are awesome, thank you!
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prev parent reply other threads:[~2026-04-28 1:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-22 16:19 [PATCH net v5 0/2] net/sched: taprio: fix NULL pointer dereference in class dump Weiming Shi
2026-04-22 16:19 ` [PATCH net v5 1/2] " Weiming Shi
2026-04-26 10:59 ` Jamal Hadi Salim
2026-04-26 13:01 ` Weiming Shi
2026-04-22 16:19 ` [PATCH net v5 2/2] selftests/tc-testing: add taprio test for class dump after child delete Weiming Shi
2026-04-26 11:00 ` Jamal Hadi Salim
2026-04-28 1:50 ` patchwork-bot+netdevbpf [this message]
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