CVE-2006-5755

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.

🔗 References (32)

• secalert@redhathttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9
• secalert@redhathttp://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9
• secalert@redhathttp://secunia.com/advisories/24098
• secalert@redhathttp://secunia.com/advisories/25691
• secalert@redhathttp://secunia.com/advisories/26620
• secalert@redhathttp://secunia.com/advisories/26994
• secalert@redhathttp://secunia.com/advisories/32485
• secalert@redhathttp://www.debian.org/security/2007/dsa-1381
• secalert@redhathttp://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.18
• secalert@redhathttp://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.18-git13.log
• secalert@redhathttp://www.mandriva.com/security/advisories?name=MDKSA-2007:171
• secalert@redhathttp://www.redhat.com/support/errata/RHSA-2008-0957.html
• secalert@redhathttp://www.securityfocus.com/archive/1/471457
• secalert@redhathttp://www.securityfocus.com/bid/26060
• secalert@redhathttp://www.ubuntu.com/usn/usn-416-1