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Ubuntu 20.04 & 18.04: USN-7073-2 critical kernel update: multiple flaws

ubuntu
Calendar Grey October 17, 2024
Scroller Ubuntu
Essential kernel enhancements for Ubuntu 20.04 and 18.04 resolve various vulnerabilities aimed at improving security for cloud environments.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems

Details:

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:

- Watchdog drivers;

- Netfilter;

- Memory management;

- Network traffic control;

(CVE-2024-27397, CVE-2024-38630, CVE-2024-45016, CVE-2024-26960)

Topics%20covered

Topics Covered

security advisory system update ubuntu attack vector kernel issues linux-azure cloud systems

Update Instructions

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

Ubuntu 20.04 LTS
   linux-image-5.4.0-1139-azure    5.4.0-1139.146
   linux-image-azure-lts-20.04     5.4.0.1139.133

Ubuntu 18.04 LTS
   linux-image-5.4.0-1139-azure    5.4.0-1139.146~18.04.1
                                   Available with Ubuntu Pro
   linux-image-azure               5.4.0.1139.146~18.04.1
                                   Available with Ubuntu Pro

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

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.

References

https://ubuntu.com/security/notices/USN-7073-2

https://ubuntu.com/security/notices/USN-7073-1

CVE-2024-26960, CVE-2024-27397, CVE-2024-38630, CVE-2024-45016

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7073-2

Topics%20covered

Topics Covered

security advisory system update ubuntu attack vector kernel issues linux-azure cloud systems

Package Information

https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1139.146

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