1. Ubuntu Security Notices
  2. USN-6866-1

USN-6866-1: Linux kernel vulnerabilities

Publication date

3 July 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe - Linux hardware enablement (HWE) kernel
  • linux-kvm - Linux kernel for cloud environments
  • linux-oracle - Linux kernel for Oracle Cloud systems

Details

It was discovered that the ext4 file system implementation in the Linux
kernel did not properly validate data state on write operations. An
attacker could use this to construct a malicious ext4 file system image
that, when mounted, could cause a denial of service (system crash).
(CVE-2021-33631)

It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)

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...

It was discovered that the ext4 file system implementation in the Linux
kernel did not properly validate data state on write operations. An
attacker could use this to construct a malicious ext4 file system image
that, when mounted, could cause a denial of service (system crash).
(CVE-2021-33631)

It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)

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)

Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)

Bai Jiaju discovered that the Xceive XC4000 silicon tuner device driver in
the Linux kernel contained a race condition, leading to an integer overflow
vulnerability. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2024-24861)

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:

  • Block layer subsystem;
  • Hardware random number generator core;
  • GPU drivers;
  • AFS file system;
  • Memory management;
  • 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
18.04 bionic linux-image-4.15.0-1132-oracle –  4.15.0-1132.143  
linux-image-4.15.0-1153-kvm –  4.15.0-1153.158  
linux-image-4.15.0-1163-gcp –  4.15.0-1163.180  
linux-image-4.15.0-1169-aws –  4.15.0-1169.182  
linux-image-4.15.0-226-generic –  4.15.0-226.238  
linux-image-4.15.0-226-lowlatency –  4.15.0-226.238  
linux-image-aws-lts-18.04 –  4.15.0.1169.167  
linux-image-gcp-lts-18.04 –  4.15.0.1163.176  
linux-image-generic –  4.15.0.226.210  
linux-image-kvm –  4.15.0.1153.144  
linux-image-lowlatency –  4.15.0.226.210  
linux-image-oracle-lts-18.04 –  4.15.0.1132.137  
linux-image-virtual –  4.15.0.226.210  
16.04 xenial linux-image-4.15.0-1132-oracle –  4.15.0-1132.143~16.04.1  
linux-image-4.15.0-1163-gcp –  4.15.0-1163.180~16.04.1  
linux-image-4.15.0-1169-aws –  4.15.0-1169.182~16.04.1  
linux-image-4.15.0-226-generic –  4.15.0-226.238~16.04.1  
linux-image-4.15.0-226-lowlatency –  4.15.0-226.238~16.04.1  
linux-image-aws-hwe –  4.15.0.1169.182~16.04.1  
linux-image-gcp –  4.15.0.1163.180~16.04.1  
linux-image-generic-hwe-16.04 –  4.15.0.226.238~16.04.1  
linux-image-gke –  4.15.0.1163.180~16.04.1  
linux-image-lowlatency-hwe-16.04 –  4.15.0.226.238~16.04.1  
linux-image-oem –  4.15.0.226.238~16.04.1  
linux-image-oracle –  4.15.0.1132.143~16.04.1  
linux-image-virtual-hwe-16.04 –  4.15.0.226.238~16.04.1  

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References

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