The acl_group_override function in smbd/posix_acls.c in smbd in Samba 3.0.x before 3.0.35, 3.1.x and 3.2.x before 3.2.13, and 3.3.x before 3.3.6, when dos filemode is enabled, allows remote attackers to modify access control lists for files via vectors related to read access to uninitialized memory.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7292
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10790
https://exchange.xforce.ibmcloud.com/vulnerabilities/51327
http://www.vupen.com/english/advisories/2009/1664
http://www.ubuntu.com/usn/USN-839-1
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.521591
http://www.securitytracker.com/id?1022442
http://www.securityfocus.com/archive/1/507856/100/0/threaded
http://www.samba.org/samba/security/CVE-2009-1888.html
http://www.samba.org/samba/ftp/patches/security/samba-3.3.5-CVE-2009-1888.patch
http://www.samba.org/samba/ftp/patches/security/samba-3.2.12-CVE-2009-1888.patch
http://www.mandriva.com/security/advisories?name=MDVSA-2009:196
http://www.debian.org/security/2009/dsa-1823
http://wiki.rpath.com/Advisories:rPSA-2009-0145
http://secunia.com/advisories/36918
http://secunia.com/advisories/35606