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From: Greg KH <greg@kroah.com>
To: "Miguel Gazquez (Schneider Electric)" <miguel.gazquez@bootlin.com>
Cc: stable@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Wei Wang <weiwan@google.com>, Martin KaFai Lau <kafai@fb.com>,
	Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
	David Ahern <dsahern@kernel.org>,
	Steffen Klassert <steffen.klassert@secunet.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Pablo Neira Ayuso <pablo@netfilter.org>,
	Jozsef Kadlecsik <kadlec@netfilter.org>,
	Florian Westphal <fw@strlen.de>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	netfilter-devel@vger.kernel.org, coreteam@netfilter.org
Subject: Re: [PATCH v6.1.y 4/4] ipv4: start using dst_dev_rcu()
Date: Mon, 24 Aug 2026 15:47:09 +0200	[thread overview]
Message-ID: <2026082454-jacket-gravity-6ddc@gregkh> (raw)
In-Reply-To: <20260821-cve-2025-40074-6-1-v1-4-cad5cf499b76@bootlin.com>

On Fri, Aug 21, 2026 at 03:33:38PM +0200, Miguel Gazquez (Schneider Electric) wrote:
> From: Eric Dumazet <edumazet@google.com>
> 
> [ Upstream commit 6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8 ]
> 
> Change icmpv4_xrlim_allow(), ip_defrag() to prevent possible UAF.
> 
> Change ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(),
> ipv4_neigh_lookup() to use lockdep enabled dst_dev_rcu().
> 
> Fixes: 4a6ce2b6f2ec ("net: introduce a new function dst_dev_put()")
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Reviewed-by: David Ahern <dsahern@kernel.org>
> Link: https://patch.msgid.link/20250828195823.3958522-9-edumazet@google.com
> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
> [ minor modifications to fix conflict, added rcu_read_lock and unlock
> to ip_defrag function ]
> Signed-off-by: Miguel Gazquez (Schneider Electric) <miguel.gazquez@bootlin.com>

We need a working 6.6.y version first, before we can take this one.

thanks,

greg k-h

  reply	other threads:[~2026-08-24 13:47 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-21 13:33 [PATCH 0/4] ipv4: start using dst_dev_rcu() Miguel Gazquez (Schneider Electric)
2026-08-21 13:33 ` [PATCH v6.1.y 1/4] net: dst: add four helpers to annotate data-races around dst->dev Miguel Gazquez (Schneider Electric)
2026-08-21 13:33 ` [PATCH v6.1.y 2/4] ipv4: adopt dst_dev, skb_dst_dev and skb_dst_dev_net[_rcu] Miguel Gazquez (Schneider Electric)
2026-08-21 13:33 ` [PATCH v6.1.y 3/4] net: dst: introduce dst->dev_rcu Miguel Gazquez (Schneider Electric)
2026-08-21 13:33 ` [PATCH v6.1.y 4/4] ipv4: start using dst_dev_rcu() Miguel Gazquez (Schneider Electric)
2026-08-24 13:47   ` Greg KH [this message]
2026-08-31 16:08     ` Miguel Gazquez
2026-09-15 13:00       ` Miguel Gazquez
2026-09-16  1:52         ` Sasha Levin

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