netdev - Re: [PATCH net 2/8] ndisc: use RCU protection in ndisc_alloc

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Message-ID: <20250210011126.54146-1-kuniyu@amazon.com>
Date: Mon, 10 Feb 2025 10:11:26 +0900
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <edumazet@...gle.com>
CC: <davem@...emloft.net>, <dsahern@...nel.org>, <eric.dumazet@...il.com>,
	<horms@...nel.org>, <kuba@...nel.org>, <kuniyu@...zon.com>,
	<netdev@...r.kernel.org>, <pabeni@...hat.com>
Subject: Re: [PATCH net 2/8] ndisc: use RCU protection in ndisc_alloc_skb()

From: Eric Dumazet <edumazet@...gle.com>
Date: Fri,  7 Feb 2025 13:58:34 +0000
> ndisc_alloc_skb() can be called without RTNL or RCU being held.
> 
> Add RCU protection to avoid possible UAF.
> 
> Fixes: de09334b9326 ("ndisc: Introduce ndisc_alloc_skb() helper.")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Reviewed-by: Kuniyuki Iwashima <kuniyu@...zon.com>