The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x before 4.2.0rc5 performs a free operation on an uninitialized stack pointer, which allows remote attackers to execute arbitrary code via crafted Netlogon packets that use the ServerPasswordSet RPC API, as demonstrated by packets reaching the _netr_ServerPasswordSet function in rpc_server/netlogon/srv_netlog_nt.c.
http://advisories.mageia.org/MGASA-2015-0084.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00035.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
http://marc.info/?l=bugtraq&m=142722696102151&w=2
http://marc.info/?l=bugtraq&m=143039217203031&w=2
http://rhn.redhat.com/errata/RHSA-2015-0249.html
http://rhn.redhat.com/errata/RHSA-2015-0250.html
http://rhn.redhat.com/errata/RHSA-2015-0251.html
http://rhn.redhat.com/errata/RHSA-2015-0252.html
http://rhn.redhat.com/errata/RHSA-2015-0253.html
http://rhn.redhat.com/errata/RHSA-2015-0254.html
http://rhn.redhat.com/errata/RHSA-2015-0255.html
http://rhn.redhat.com/errata/RHSA-2015-0256.html
http://rhn.redhat.com/errata/RHSA-2015-0257.html
https://access.redhat.com/articles/1346913
https://bugzilla.redhat.com/show_bug.cgi?id=1191325
http://security.gentoo.org/glsa/glsa-201502-15.xml
https://securityblog.redhat.com/2015/02/23/samba-vulnerability-cve-2015-0240/
https://www.exploit-db.com/exploits/36741/
https://www.samba.org/samba/security/CVE-2015-0240
http://www.debian.org/security/2015/dsa-3171
http://www.mandriva.com/security/advisories?name=MDVSA-2015:081
http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html