The new Linux Operating System Vulnerability Dirty COW (CVE-2016-5195) has been patched on all server kernels of Measured Designs hosting. This was carried out almost immediately following public disclosure of the vulnerability (October 20th).
Why is it called Dirty COW?
“the way the Linux kernel’s memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.” – Red Hat
All Magento clients will have been presented with a warning notification in the admin section of their CMS this week. The message linked to a Magento Resources article and a microsite dedicated to the exploit.