1. Ubuntu Security Notices
  2. USN-6868-1

USN-6868-1: Linux kernel vulnerabilities

Publication date

3 July 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Sander Wiebing, Alvise de Faveri Tron, Herbert Bos, and Cristiano Giuffrida
discovered that the Linux kernel mitigations for the initial Branch History
Injection vulnerability (CVE-2022-0001) were insufficient for Intel
processors. A local attacker could potentially use this to expose sensitive
information. (CVE-2024-2201)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • Netfilter

Sander Wiebing, Alvise de Faveri Tron, Herbert Bos, and Cristiano Giuffrida
discovered that the Linux kernel mitigations for the initial Branch History
Injection vulnerability (CVE-2022-0001) were insufficient for Intel
processors. A local attacker could potentially use this to expose sensitive
information. (CVE-2024-2201)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • Netfilter

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.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

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

Ubuntu Release Package Version
20.04 focal linux-image-5.4.0-1039-iot –  5.4.0-1039.40
linux-image-5.4.0-1046-xilinx-zynqmp –  5.4.0-1046.50
linux-image-5.4.0-1074-ibm –  5.4.0-1074.79
linux-image-5.4.0-1087-bluefield –  5.4.0-1087.94
linux-image-5.4.0-1094-gkeop –  5.4.0-1094.98
linux-image-5.4.0-1111-raspi –  5.4.0-1111.123
linux-image-5.4.0-1115-kvm –  5.4.0-1115.122
linux-image-5.4.0-1126-oracle –  5.4.0-1126.135
linux-image-5.4.0-1127-aws –  5.4.0-1127.137
linux-image-5.4.0-1131-gcp –  5.4.0-1131.140
linux-image-5.4.0-1132-azure –  5.4.0-1132.139
linux-image-5.4.0-187-generic –  5.4.0-187.207
linux-image-5.4.0-187-generic-lpae –  5.4.0-187.207
linux-image-5.4.0-187-lowlatency –  5.4.0-187.207
linux-image-aws-lts-20.04 –  5.4.0.1127.124
linux-image-azure-lts-20.04 –  5.4.0.1132.126
linux-image-bluefield –  5.4.0.1087.83
linux-image-gcp-lts-20.04 –  5.4.0.1131.133
linux-image-generic –  5.4.0.187.185
linux-image-generic-lpae –  5.4.0.187.185
linux-image-gkeop –  5.4.0.1094.92
linux-image-gkeop-5.4 –  5.4.0.1094.92
linux-image-ibm-lts-20.04 –  5.4.0.1074.103
linux-image-kvm –  5.4.0.1115.111
linux-image-lowlatency –  5.4.0.187.185
linux-image-oem –  5.4.0.187.185
linux-image-oem-osp1 –  5.4.0.187.185
linux-image-oracle-lts-20.04 –  5.4.0.1126.119
linux-image-raspi –  5.4.0.1111.141
linux-image-raspi2 –  5.4.0.1111.141
linux-image-virtual –  5.4.0.187.185
linux-image-xilinx-zynqmp –  5.4.0.1046.46
18.04 bionic linux-image-5.4.0-1074-ibm –  5.4.0-1074.79~18.04.1  
linux-image-5.4.0-1111-raspi –  5.4.0-1111.123~18.04.1  
linux-image-5.4.0-1126-oracle –  5.4.0-1126.135~18.04.1  
linux-image-5.4.0-1132-azure –  5.4.0-1132.139~18.04.1  
linux-image-5.4.0-187-generic –  5.4.0-187.207~18.04.1  
linux-image-5.4.0-187-lowlatency –  5.4.0-187.207~18.04.1  
linux-image-azure –  5.4.0.1132.139~18.04.1  
linux-image-generic-hwe-18.04 –  5.4.0.187.207~18.04.1  
linux-image-ibm –  5.4.0.1074.79~18.04.1  
linux-image-lowlatency-hwe-18.04 –  5.4.0.187.207~18.04.1  
linux-image-oem –  5.4.0.187.207~18.04.1  
linux-image-oem-osp1 –  5.4.0.187.207~18.04.1  
linux-image-oracle –  5.4.0.1126.135~18.04.1  
linux-image-raspi-hwe-18.04 –  5.4.0.1111.123~18.04.1  
linux-image-snapdragon-hwe-18.04 –  5.4.0.187.207~18.04.1  
linux-image-virtual-hwe-18.04 –  5.4.0.187.207~18.04.1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

id="usn"

Have additional questions?

Talk to a member of the team ›