1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index fc7993e9061f..5a0693576e82 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -611,6 +611,9 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                  *      Check the arguments are allowable
                  */
 
+                if (optlen < sizeof(struct in_addr))
+                        goto e_inval;
+
                 err = -EFAULT;
                 if (optlen >= sizeof(struct ip_mreqn)) {
                         if (copy_from_user(&mreq, optval, sizeof(mreq)))