CVE-2006-5755 Information

Description

Linux kernel before 2.6.18 when running on x86_64 systems does not properly save or restore EFLAGS during a context switch which allows local users to cause a denial of service (crash) by causing SYSENTER to set an NT flag which can trigger a crash on the IRET of the next task.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=658fdbef66e5e9be79b457edc2cbbb3add840aa9 http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=658fdbef66e5e9be79b457edc2cbbb3add840aa9 http://secunia.com/advisories/24098 http://secunia.com/advisories/25691 http://secunia.com/advisories/26620 http://secunia.com/advisories/26994 http://secunia.com/advisories/32485 http://www.debian.org/security/2007/dsa-1381 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.18 http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.18-git13.log http://www.mandriva.com/security/advisories?name=MDKSA-2007:171 http://www.redhat.com/support/errata/RHSA-2008-0957.html http://www.securityfocus.com/archive/1/471457 http://www.securityfocus.com/bid/26060 http://www.ubuntu.com/usn/usn-416-1 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A9554