IBM DB2 for Linux UNIX and Windows (includes DB2 Connect Server) 9.7 10.1 10.5 11.1 and 11.5 could allow a local attacker to perform unauthorized actions on the system caused by improper usage of shared memory. By sending a specially-crafted request an attacker could exploit this vulnerability to obtain sensitive information or cause a denial of service. IBM X-Force ID: 179989.