netdev - Re: [PATCH net-next 1/3] inet: ping: check sock_net() in ping_get

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Message-ID: <b6013a6b-5423-4cfd-9b19-94ee26b95028@kernel.org>
Date: Wed, 27 Aug 2025 08:50:57 -0600
From: David Ahern <dsahern@...nel.org>
To: Eric Dumazet <edumazet@...gle.com>, "David S . Miller"
 <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, netdev@...r.kernel.org,
 eric.dumazet@...il.com
Subject: Re: [PATCH net-next 1/3] inet: ping: check sock_net() in
 ping_get_port()

On 8/27/25 6:05 AM, Eric Dumazet wrote:
> We need to check socket netns before considering them in ping_get_port().
> Otherwise, one malicious netns could 'consume' all ports.
> 
> Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---
>  net/ipv4/ping.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>