Ubuntu 22.04 LTS USN-7535-1 critical: intel microcode issues

ubuntu

May 27, 2025

Several security issues were fixed in Intel Microcode.

Summary

Several security issues were fixed in Intel Microcode.

Software Description:

- intel-microcode: Processor microcode for Intel CPUs

Details:

Sander Wiebing and Cristiano Giuffrida discovered that some Intel®

Processors did not properly handle data in Shared Microarchitectural

Structures during Transient Execution. An authenticated attacker could

possibly use this issue to obtain sensitive information. (CVE-2024-28956)

It was discovered that some Intel® Processors did not properly handle

prediction calculations. An authenticated attacker could possibly use this

issue to obtain sensitive information. (CVE-2024-43420, CVE-2024-45332,

CVE-2025-20623)

It was discovered that some Intel® Processors did not properly initialize

resources in the branch prediction unit. An authenticated attacker could

possibly use this issue to obtain sensitive information. (CVE-2025-20012,

CVE-2025-24495)

Michal Raviv and Jeff Gilbert discovered that some Intel® Processors did

...

Read the Full Advisory

Topics Covered

security advisory Ubuntu DoS threat information disclosure intel microcode CPU security

Update Instructions

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

Ubuntu 25.04
  intel-microcode                 3.20250512.0ubuntu0.25.04.1

Ubuntu 24.10
  intel-microcode                 3.20250512.0ubuntu0.24.10.1

Ubuntu 24.04 LTS
  intel-microcode                 3.20250512.0ubuntu0.24.04.1

Ubuntu 22.04 LTS
  intel-microcode                 3.20250512.0ubuntu0.22.04.1

Ubuntu 20.04 LTS
  intel-microcode                 3.20250512.0ubuntu0.20.04.1

Ubuntu 18.04 LTS
  intel-microcode                 3.20250512.0ubuntu0.18.04.1+esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  intel-microcode                 3.20250512.0ubuntu0.16.04.1+esm1
                                  Available with Ubuntu Pro

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