inet: ping: check sock_net() in ping_get_port() and ping_lookup()

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[ Upstream commit 59f26d86b2 ]

We need to check socket netns before considering them in ping_get_port().
Otherwise, one malicious netns could 'consume' all ports.

Add corresponding check in ping_lookup().

Fixes: c319b4d76b ("net: ipv4: add IPPROTO_ICMP socket kind")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://patch.msgid.link/20250829153054.474201-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eric Dumazet 2025-08-29 15:30:51 +00:00 • committed by Greg Kroah-Hartman

parent 854da2b0df

commit 3e751e21a8

1 changed files with 10 additions and 4 deletions

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net/ipv4/ping.c

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