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gtp: add missing gtp_encap_disable_sock() in gtp_encap_enable()

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[ Upstream commit e30155fd23c9c141cbe7d99b786e10a83a328837 ]

If an invalid role is sent from user space, gtp_encap_enable() will fail.
Then, it should call gtp_encap_disable_sock() but current code doesn't.
It makes memory leak.

Fixes: 91ed81f9abc7 ("gtp: support SGSN-side tunnels")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Taehee Yoo 2019-07-03 00:24:04 +09:00 committed by Greg Kroah-Hartman
parent ef61755621
commit 36ae374e31
1 changed files with 6 additions and 1 deletions
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7
drivers/net/gtp.c
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@ -845,8 +845,13 @@ static int gtp_encap_enable(struct gtp_dev *gtp, struct nlattr *data[])
if (data[IFLA_GTP_ROLE]) {
role = nla_get_u32(data[IFLA_GTP_ROLE]);
if (role > GTP_ROLE_SGSN)
if (role > GTP_ROLE_SGSN) {
if (sk0)
gtp_encap_disable_sock(sk0);
if (sk1u)
gtp_encap_disable_sock(sk1u);
return -EINVAL;
}
}
gtp->sk0 = sk0;