1. Ubuntu Security Notices
  2. USN-7121-1

USN-7121-1: Linux kernel vulnerabilities

Publication date

19 November 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-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud 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

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:

  • ARM64 architecture;
  • S390 architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ATM drivers;
  • Device frequency scaling framework;
  • GPU drivers;
  • Hardware monitoring drivers;
  • VMware VMCI Driver;
  • Network drivers;
  • Device tree and open firmware driver;
  • SCSI drivers;
  • Greybus lights staging drivers;
  • BTRFS file system;
  • File systems infrastructure;
  • F2FS file system;
  • JFS file system;
  • NILFS2 file system;
  • Netfilter;
  • Memory management;
  • Ethernet bridge;
  • IPv6 networking;
  • IUCV driver;
  • Logical Link layer;
  • MAC80211 subsystem;
  • NFC...

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:

  • ARM64 architecture;
  • S390 architecture;
  • x86 architecture;
  • Block layer subsystem;
  • Cryptographic API;
  • ATM drivers;
  • Device frequency scaling framework;
  • GPU drivers;
  • Hardware monitoring drivers;
  • VMware VMCI Driver;
  • Network drivers;
  • Device tree and open firmware driver;
  • SCSI drivers;
  • Greybus lights staging drivers;
  • BTRFS file system;
  • File systems infrastructure;
  • F2FS file system;
  • JFS file system;
  • NILFS2 file system;
  • Netfilter;
  • Memory management;
  • Ethernet bridge;
  • IPv6 networking;
  • IUCV driver;
  • Logical Link layer;
  • MAC80211 subsystem;
  • NFC subsystem;
  • Network traffic control;
  • Unix domain sockets

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-4.15.0-1137-oracle –  4.15.0-1137.148  
linux-image-4.15.0-1158-kvm –  4.15.0-1158.163  
linux-image-4.15.0-1168-gcp –  4.15.0-1168.185  
linux-image-4.15.0-1175-aws –  4.15.0-1175.188  
linux-image-4.15.0-1183-azure –  4.15.0-1183.198  
linux-image-4.15.0-231-generic –  4.15.0-231.243  
linux-image-4.15.0-231-lowlatency –  4.15.0-231.243  
linux-image-aws-lts-18.04 –  4.15.0.1175.173  
linux-image-azure-lts-18.04 –  4.15.0.1183.151  
linux-image-gcp-lts-18.04 –  4.15.0.1168.181  
linux-image-generic –  4.15.0.231.215  
linux-image-kvm –  4.15.0.1158.149  
linux-image-lowlatency –  4.15.0.231.215  
linux-image-oracle-lts-18.04 –  4.15.0.1137.142  
linux-image-virtual –  4.15.0.231.215  
16.04 xenial linux-image-4.15.0-1168-gcp –  4.15.0-1168.185~16.04.1  
linux-image-4.15.0-1175-aws –  4.15.0-1175.188~16.04.1  
linux-image-4.15.0-1183-azure –  4.15.0-1183.198~16.04.1  
linux-image-4.15.0-231-generic –  4.15.0-231.243~16.04.1  
linux-image-4.15.0-231-lowlatency –  4.15.0-231.243~16.04.1  
linux-image-aws-hwe –  4.15.0.1175.188~16.04.1  
linux-image-azure –  4.15.0.1183.198~16.04.1  
linux-image-gcp –  4.15.0.1168.185~16.04.1  
linux-image-generic-hwe-16.04 –  4.15.0.231.243~16.04.1  
linux-image-gke –  4.15.0.1168.185~16.04.1  
linux-image-lowlatency-hwe-16.04 –  4.15.0.231.243~16.04.1  
linux-image-oem –  4.15.0.231.243~16.04.1  
linux-image-virtual-hwe-16.04 –  4.15.0.231.243~16.04.1  

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References

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