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From: Leon Romanovsky <leon@kernel.org>
To: Chen Zhen <chenzhen126@huawei.com>
Cc: jgg@ziepe.ca, linux-rdma@vger.kernel.org, huyizhen2@huawei.com
Subject: Re: Question about the relevance of "Fix memory corruption in CM" patchset to syzkaller bugs found on stable 5.10
Date: Wed, 7 Jan 2026 14:10:16 +0200	[thread overview]
Message-ID: <20260107121016.GC11783@unreal> (raw)
In-Reply-To: <239215b6-5780-4f58-a6f4-5bddf1edf33e@huawei.com>

On Wed, Jan 07, 2026 at 05:22:55PM +0800, Chen Zhen wrote:
> Hi everyone,
> 
> I am reaching out to consult on two recent syzkaller issues found in the ib/cm module on stable 5.10.
> Both issues occur when ib_cancel_mad interacts with cm_id_priv->av.port data.
> 
> I noticed the following patchset from Leon:
> Fix memory corruption in CM, Link:https://lore.kernel.org/all/cover.1622629024.git.leonro@nvidia.com/
> The description of that patchset mentions fixing memory corruption.
> 
> I would like to ask:
> Is this specific patchset intended to cover the null-ptr-deref and UAF scenarios described below?

It looks like that work should address your MAD issues.

> If not, is there any other known work regarding these lifetime issues in the CM module?

I'm not aware of any.

Thanks

      reply	other threads:[~2026-01-07 12:10 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-07  9:22 Question about the relevance of "Fix memory corruption in CM" patchset to syzkaller bugs found on stable 5.10 Chen Zhen
2026-01-07 12:10 ` Leon Romanovsky [this message]

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