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Old 7th June 2011, 10:00 PM   #1
stmok Thread Starter
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Join Date: Jul 2001
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Default Intel's Supervisor Mode Execution Protection (SMEP)

I thought this would be interesting to share. I wasn't really sure where to post this. But since its a hardware feature, I'll stick it here.

In mid-May, an Intel employee submitted a patch to the Linux Kernel to enable support for an unannounced security-related feature in their CPUs.

Its called SMEP (Supervisor Mode Execution Protection).

While I couldn't find any info on it from Intel, a security researcher (whitehat hacker) has blogged about it in detail...

SMEP: What is It, and How to Beat It on Linux
=> http://vulnfactory.org/blog/2011/06/...t-it-on-linux/

At this time, no Intel processor supports SMEP. Presumably, it will be a feature in Ivy Bridge for 2012. (We can also assume Windows 8 will support it. Maybe a patch or Service Pack feature for Windows Vista/7?)
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