Multiple race conditions in the terminal layer in Linux 2.4.x, and 2.6.x before 2.6.9, allow (1) local users to obtain portions of kernel data via a TIOCSETD ioctl call to a terminal interface that is being accessed by another thread, or (2) remote attackers to cause a denial of service (panic) by switching from console to PPP line discipline, then quickly sending data that is received during the switch.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10728
https://exchange.xforce.ibmcloud.com/vulnerabilities/17816
https://bugzilla.fedora.us/show_bug.cgi?id=2336
http://www.securityfocus.com/bid/11492
http://www.securityfocus.com/bid/11491
http://www.securityfocus.com/archive/1/379005
http://www.redhat.com/support/errata/RHSA-2005-293.html
http://www.mandriva.com/security/advisories?name=MDKSA-2005:022
http://marc.info/?l=bugtraq&m=110306397320336&w=2