(the Intel microcode firmware has been updated in the Ubuntu repository)
Canonical wrote in the Security Bulletin:
It has been found that the microprocessor has hidden dangers in predicting execution and prediction execution, or allows unauthorized people to read memory through bypass attacks. It is the Spectre flaw.
A local attacker can take sensitive information, including kernel memory (Bulletin number:CVE-2017-5715).
To update the Intel CPU microcode, please pay attention to downloading the corresponding version:
The new version of Ubuntu 17.10 is' intel-microcode 3.20180108.0~ubuntu17.10.1 'and' intel-microcode 3.20180108.0~ubuntu17.04.1 ';
The new version of Ubuntu 17.10 is' intel-microcode 3.20180108.0~ubuntu16.04.2 'and' intel-microcode 3.20180108.0~ubuntu14.04.2 '.
The microcode update installation method is as follows:
Open the 'software and update' program and click on the 'additional driver' tag page.
Look at the processor firmware in 'intel-microcode'. If you don't check it, remember to do it manually.
Run sudo apt-get update in terminal
Reboot and complete the update.