Commit
f2f8036 ("tipc: add support for connect() on dgram/rdm sockets")
hasn't validated user input length for the sockaddr structure which allows
a user to overwrite kernel memory with arbitrary input.
Fixes: f2f8036 ("tipc: add support for connect() on dgram/rdm sockets")
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
if (dst->family == AF_UNSPEC) {
memset(&tsk->remote, 0, sizeof(struct sockaddr_tipc));
tsk->connected = 0;
+ } else if (destlen != sizeof(struct sockaddr_tipc)) {
+ res = -EINVAL;
} else {
memcpy(&tsk->remote, dest, destlen);
tsk->connected = 1;