1. Ubuntu Security Notices
  2. USN-6967-1

USN-6967-1: Intel Microcode vulnerabilities

Publication date

20 August 2024

Overview

Several security issues were fixed in Intel Microcode.

Releases

Packages

Details

It was discovered that some Intel® Core™ Ultra Processors did not properly
isolate the stream cache. A local authenticated user could potentially use
this to escalate their privileges. (CVE-2023-42667)

It was discovered that some Intel® Processors did not properly isolate the
stream cache. A local authenticated user could potentially use this to
escalate their privileges. (CVE-2023-49141)

It was discovered that some Intel® Processors did not correctly transition
between the executive monitor and SMI transfer monitor (STM). A privileged
local attacker could use this to escalate their privileges.
(CVE-2024-24853)

It was discovered that some 3rd, 4th, and 5th Generation Intel® Xeon®
Processors failed to properly implement a protection mechanism. A local
attacker could use this to potentially escalate their...

It was discovered that some Intel® Core™ Ultra Processors did not properly
isolate the stream cache. A local authenticated user could potentially use
this to escalate their privileges. (CVE-2023-42667)

It was discovered that some Intel® Processors did not properly isolate the
stream cache. A local authenticated user could potentially use this to
escalate their privileges. (CVE-2023-49141)

It was discovered that some Intel® Processors did not correctly transition
between the executive monitor and SMI transfer monitor (STM). A privileged
local attacker could use this to escalate their privileges.
(CVE-2024-24853)

It was discovered that some 3rd, 4th, and 5th Generation Intel® Xeon®
Processors failed to properly implement a protection mechanism. A local
attacker could use this to potentially escalate their privileges.
(CVE-2024-24980)

It was discovered that some 3rd Generation Intel Xeon Scalable Processors
did not properly handle mirrored regions with different values. A
privileged local user could use this to cause a denial of service (system
crash). (CVE-2024-25939)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
24.04 noble intel-microcode –  3.20240813.0ubuntu0.24.04.2
22.04 jammy intel-microcode –  3.20240813.0ubuntu0.22.04.2
20.04 focal intel-microcode –  3.20240813.0ubuntu0.20.04.2
18.04 bionic intel-microcode –  3.20240813.0ubuntu0.18.04.1+esm2  
16.04 xenial intel-microcode –  3.20240813.0ubuntu0.16.04.1+esm2  

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References

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