Ubuntu 22.04 LTS USN-5612-1 Moderate: Intel Microcode Local Threat

ubuntu

September 15, 2022

A security issue was fixed in Intel Microcode.

Summary

A security issue was fixed in Intel Microcode.

Software Description:

- intel-microcode: Processor microcode for Intel CPUs

Details:

Pietro Borrello, Andreas Kogler, Martin Schwarzl, Daniel Gruss, Michael

Schwarz and Moritz Lipp discovered that some Intel processors did not

properly clear data between subsequent xAPIC MMIO reads. This could allow a

local attacker to compromise SGX enclaves.

Topics Covered

security advisory moderate local threat ubuntu intel microcode

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
  intel-microcode                 3.20220809.0ubuntu0.22.04.1

Ubuntu 20.04 LTS:
  intel-microcode                 3.20220809.0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  intel-microcode                 3.20220809.0ubuntu0.18.04.1

After a standard system update you need to reboot your computer to make
all the necessary changes.