The signal handling in the Linux kernel before 2.6.22, including 2.6.2, when running on PowerPC systems using HTX, allows local users to cause a denial of service via unspecified vectors involving floating point corruption and concurrency, related to clearing of MSR bits.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9936
https://exchange.xforce.ibmcloud.com/vulnerabilities/35383
http://www.ubuntu.com/usn/usn-574-1
http://www.securitytracker.com/id?1018347
http://www.securityfocus.com/bid/24845
http://www.redhat.com/support/errata/RHSA-2007-0595.html
http://www.novell.com/linux/security/advisories/2007_53_kernel.html
http://www.novell.com/linux/security/advisories/2007_51_kernel.html
http://secunia.com/advisories/28706
http://secunia.com/advisories/27227
http://secunia.com/advisories/26664
http://secunia.com/advisories/25963
http://secunia.com/advisories/25955