Linux kernel 2.4.x and 2.6.x up to 2.6.16 allows local users to bypass IPC permissions and modify a readonly attachment of shared memory by using mprotect to give write permission to the attachment. NOTE: some original raw sources combined this issue with CVE-2006-1524, but they are different bugs.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9978
https://exchange.xforce.ibmcloud.com/vulnerabilities/26169
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=190073
http://www.vupen.com/english/advisories/2006/4502
http://www.vupen.com/english/advisories/2006/1391
http://www.vmware.com/download/esx/esx-254-200610-patch.html
http://www.vmware.com/download/esx/esx-213-200610-patch.html
http://www.vmware.com/download/esx/esx-202-200610-patch.html
http://www.ubuntu.com/usn/usn-302-1
http://www.securityfocus.com/archive/1/451426/100/200/threaded
http://www.securityfocus.com/archive/1/451419/100/200/threaded
http://www.securityfocus.com/archive/1/451417/100/200/threaded
http://www.securityfocus.com/archive/1/451404/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2006-0710.html
http://www.redhat.com/support/errata/RHSA-2006-0689.html
http://www.redhat.com/support/errata/RHSA-2006-0580.html
http://www.redhat.com/support/errata/RHSA-2006-0579.html
http://www.mandriva.com/security/advisories?name=MDKSA-2006:086
http://support.avaya.com/elmodocs2/security/ASA-2006-254.htm
http://support.avaya.com/elmodocs2/security/ASA-2006-249.htm
http://secunia.com/advisories/23064
http://secunia.com/advisories/22945
http://secunia.com/advisories/22875
http://secunia.com/advisories/22497
http://secunia.com/advisories/22292
http://secunia.com/advisories/21035
http://secunia.com/advisories/20716