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Ubuntu 22.04 LTS USN-6775-2 Critical: Kernel Flaws Cause DoS

ubuntu
Calendar Grey May 21, 2024
Dist Ubuntu Esm H88
Enhancements tackle significant security flaws within the Linux kernel specific to Ubuntu, safeguarding overall system reliability and applying necessary updates.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-gke: Linux kernel for Google Container Engine (GKE) systems

- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems

Details:

Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux

kernel contained a race condition during device removal, leading to a use-

after-free vulnerability. A physically proximate attacker could possibly

use this to cause a denial of service (system crash). (CVE-2023-47233)

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:

- MAC80211 subsystem;

- Tomoyo security module;

(CVE-2024-26622, CVE-2023-52530)

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel system update AWS

Update Instructions

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

Ubuntu 22.04 LTS
   linux-image-5.15.0-1059-gke     5.15.0-1059.64
   linux-image-5.15.0-1062-aws     5.15.0-1062.68
   linux-image-aws-lts-22.04       5.15.0.1062.62
   linux-image-gke                 5.15.0.1059.58
   linux-image-gke-5.15            5.15.0.1059.58

Ubuntu 20.04 LTS
   linux-image-5.15.0-1062-aws     5.15.0-1062.68~20.04.1
   linux-image-aws                 5.15.0.1062.68~20.04.1

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-6775-2

https://ubuntu.com/security/notices/USN-6775-1

CVE-2023-47233, CVE-2023-52530, CVE-2024-26622

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6775-2

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel system update AWS

Package Information

https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1059.64
https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1062.68~20.04.1

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