The CIFS filesystem in the Linux kernel before 2.6.22, when Unix extension support is enabled, does not honor the umask of a process, which allows local users to gain privileges.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9953
https://exchange.xforce.ibmcloud.com/vulnerabilities/36593
https://bugzilla.redhat.com/show_bug.cgi?id=253314
http://www.ubuntu.com/usn/usn-518-1
http://www.securityfocus.com/bid/25672
http://www.redhat.com/support/errata/RHSA-2007-0939.html
http://www.redhat.com/support/errata/RHSA-2007-0705.html
http://www.mandriva.com/security/advisories?name=MDVSA-2008:105
http://www.mandriva.com/security/advisories?name=MDVSA-2008:008
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
http://www.debian.org/security/2008/dsa-1504
http://www.debian.org/security/2007/dsa-1378
http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
http://secunia.com/advisories/29058
http://secunia.com/advisories/28806
http://secunia.com/advisories/27912
http://secunia.com/advisories/27747
http://secunia.com/advisories/27436
http://secunia.com/advisories/26978
http://secunia.com/advisories/26955
http://secunia.com/advisories/26760
http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html