Buffer overflow.
vulners.com/securityvulns/securityvulns:doc:1018
vulners.com/securityvulns/securityvulns:doc:1019
vulners.com/securityvulns/securityvulns:doc:1020
vulners.com/securityvulns/securityvulns:doc:3070
vulners.com/securityvulns/securityvulns:doc:3082