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
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the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
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