Amazon Linux AMI Security Advisory: ALAS-2017-876
Advisory Release Date: 2017-08-31 22:53 Pacific
Integer overflow in nlmsg_reserve():
An integer overflow leading to a heap-buffer overflow was found in the libnl library. An attacker could use this flaw to cause an application compiled with libnl to crash or possibly execute arbitrary code in the context of the user running such an application. (CVE-2017-0553 )
Run yum update libnl3 to update your system.