From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
To: Adrian Martinez Garcia <adrimg3196@gmail.com>, netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] xfrm: account XFRMA_IF_ID and XFRMA_OFFLOAD_DEV in msgsize helpers
Date: Mon, 12 Oct 2026 16:10:50 +0200 [thread overview]
Message-ID: <893fef96-e6a2-4cad-8100-5b2865aa7605@6wind.com> (raw)
In-Reply-To: <CACO1+RRid9tJq81weX-UHj6111gGZ_H1RMnxk66dtGZfwxoXRw@mail.gmail.com>
Le 11/10/2026 à 10:06, Adrian Martinez Garcia a écrit :
> Hi,
>
> The xfrm_acquire_msgsize(), xfrm_polexpire_msgsize() and xfrm_expire_msgsize()
> helpers do not account for the XFRMA_IF_ID (8 B) and XFRMA_OFFLOAD_DEV
> (12 B) attributes that their sibling builders emit. The deficit of up to
> 20 B can trigger BUG_ON(err < 0) in the callers -> latent kernel panic.
>
> This is a sibling of CVE-2026-43107 (fix 7081d46d32 only corrected the
> aevent pair; these three pairs were left unfixed).
>
> Fixes: 7e6526404ade
> Signed-off-by: Adrian Martinez <adrimg3196@gmail.com>
>
> I used Claude Code to help with the audit.
Please, don't use attachments.
Here is the doc about the process:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst#n278
Regards,
Nicolas
prev parent reply other threads:[~2026-10-12 14:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-11 8:06 [PATCH] xfrm: account XFRMA_IF_ID and XFRMA_OFFLOAD_DEV in msgsize helpers Adrian Martinez Garcia
2026-10-12 14:10 ` Nicolas Dichtel [this message]
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