[PATCH net v5 07/10] ip6mr: Lock RCU before ip6mr_get_table() call in ip6_mroute_setsockopt()
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STALE741d
SUPERSEDED
From: Stefan Wiehler <hidden>
Date: 2024-10-14 15:13:20
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Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Status: Superseded by v6 (posted 2024-10-17). [go to v6]
Revision v5 (2 revisions archived).
Revisions (2)
- v5 current
- v6 [diff against previous]
When IPV6_MROUTE_MULTIPLE_TABLES is enabled, calls to ip6mr_get_table()
must be done under RCU or RTNL lock.
Fixes: d1db275dd3f6 ("ipv6: ip6mr: support multiple tables")
Signed-off-by: Stefan Wiehler <redacted>
---
net/ipv6/ip6mr.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index ecb9e86fe45a..b54353bee2f8 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c@@ -1668,7 +1668,9 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, sockptr_t optval, inet_sk(sk)->inet_num != IPPROTO_ICMPV6) return -EOPNOTSUPP; + rcu_read_lock(); mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT); + rcu_read_unlock(); if (!mrt) return -ENOENT;
--
2.42.0