[grsec] grsecurity 2.1.2 released for 2.4.29/2.6.11 *CRITICAL UPDATE*

[Brad Spengler]

As an update to this, if you're using grsecurity in the LOW or MEDIUM 
security settings, you are not vulnerable, since neither SEGMEXEC nor 
RANDEXEC are enabled in those configurations.  To mitigate some of the 
risk imposed by the vulnerability until you can patch your machines, 
echo "0 0" > /proc/sys/vm/pagetable_cache

Details of the vulnerability will be released next week, to allow for 
everyone to update first.

-Brad
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