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| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-13 13:51:55 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-29 17:25:13 +0200 |
| commit | 4fdf9bdb28835566d5648cd4c0200d37e4efa791 (patch) | |
| tree | 9bdf6b955642132720b8ca212d15ff393e21f046 /net/sctp | |
| parent | 351f81f7d7185d18a9ff76f8f8c2fa8c4eea563b (diff) | |
| download | linux-stable-4fdf9bdb28835566d5648cd4c0200d37e4efa791.tar.gz linux-stable-4fdf9bdb28835566d5648cd4c0200d37e4efa791.tar.bz2 linux-stable-4fdf9bdb28835566d5648cd4c0200d37e4efa791.zip | |
ip: Fix data-races around sysctl_ip_nonlocal_bind.
[ Upstream commit 289d3b21fb0bfc94c4e98f10635bba1824e5f83c ]
While reading sysctl_ip_nonlocal_bind, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/protocol.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index ec0f52567c16..9987decdead2 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -359,7 +359,7 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp) if (addr->v4.sin_addr.s_addr != htonl(INADDR_ANY) && ret != RTN_LOCAL && !sp->inet.freebind && - !net->ipv4.sysctl_ip_nonlocal_bind) + !READ_ONCE(net->ipv4.sysctl_ip_nonlocal_bind)) return 0; if (ipv6_only_sock(sctp_opt2sk(sp))) |