The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors. NOTE: some of these details are obtained from third party information.
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00302.html
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00170.html
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00032.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9868
https://issues.rpath.com/browse/RPL-1965
https://exchange.xforce.ibmcloud.com/vulnerabilities/38547
http://www.vupen.com/english/advisories/2007/3902
http://www.ubuntu.com/usn/usn-578-1
http://www.ubuntu.com/usn/usn-574-1
http://www.ubuntu.com/usn/usn-558-1
http://www.securityfocus.com/bid/26477
http://www.novell.com/linux/security/advisories/2007_63_kernel.html
http://www.mandriva.com/security/advisories?name=MDVSA-2008:112
http://www.mandriva.com/security/advisories?name=MDVSA-2008:044
http://www.mandriva.com/security/advisories?name=MDVSA-2008:008
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.8
http://www.debian.org/security/2007/dsa-1428
http://secunia.com/advisories/30962
http://secunia.com/advisories/30818
http://secunia.com/advisories/29245
http://secunia.com/advisories/28971
http://secunia.com/advisories/28748
http://secunia.com/advisories/28706
http://secunia.com/advisories/28170
http://secunia.com/advisories/28033
http://secunia.com/advisories/27922
http://secunia.com/advisories/27919
http://secunia.com/advisories/27888
http://secunia.com/advisories/27703
http://secunia.com/advisories/27664
http://rhn.redhat.com/errata/RHSA-2008-0055.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2008-03/msg00002.html