Commit ac0107ed authored Jul 18, 2018 by Ursula Braun Committed by David S. Miller Jul 18, 2018

net/smc: add error handling for get_user()



For security reasons the return code of get_user() should always be
checked.

Fixes: 01d2f7e2 ("net/smc: sockopts TCP_NODELAY and TCP_CORK")
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 99be51f1

net/smc/af_smc.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1456,7 +1456,8 @@ static int smc_setsockopt(struct socket *sock, int level, int optname,

		if (optlen < sizeof(int))
		return -EINVAL;
		get_user(val, (int __user *)optval);
		if (get_user(val, (int __user *)optval))
		return -EFAULT;

		lock_sock(sk);
		switch (optname) {