1. Ubuntu Security Notices
  2. USN-7028-1

USN-7028-1: Linux kernel vulnerabilities

Publication date

23 September 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

It was discovered that the JFS file system contained an out-of-bounds read
vulnerability when printing xattr debug information. A local attacker could
use this to cause a denial of service (system crash).

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:

  • GPU drivers;
  • Greybus drivers;
  • Modular ISDN driver;
  • Multiple devices driver;
  • Network drivers;
  • SCSI drivers;
  • VFIO drivers;
  • F2FS file system;
  • GFS2 file system;
  • JFS file system;
  • NILFS2 file system;
  • Kernel debugger infrastructure;
  • Bluetooth subsystem;
  • IPv4 networking;
  • L2TP protocol;
  • Netfilter;
  • RxRPC session sockets

It was discovered that the JFS file system contained an out-of-bounds read
vulnerability when printing xattr debug information. A local attacker could
use this to cause a denial of service (system crash).

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:

  • GPU drivers;
  • Greybus drivers;
  • Modular ISDN driver;
  • Multiple devices driver;
  • Network drivers;
  • SCSI drivers;
  • VFIO drivers;
  • F2FS file system;
  • GFS2 file system;
  • JFS file system;
  • NILFS2 file system;
  • Kernel debugger infrastructure;
  • Bluetooth subsystem;
  • IPv4 networking;
  • L2TP protocol;
  • Netfilter;
  • RxRPC session 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-4.15.0-1135-oracle –  4.15.0-1135.146  
linux-image-4.15.0-1156-kvm –  4.15.0-1156.161  
linux-image-4.15.0-1166-gcp –  4.15.0-1166.183  
linux-image-4.15.0-1173-aws –  4.15.0-1173.186  
linux-image-4.15.0-1181-azure –  4.15.0-1181.196  
linux-image-4.15.0-229-generic –  4.15.0-229.241  
linux-image-4.15.0-229-lowlatency –  4.15.0-229.241  
linux-image-aws-lts-18.04 –  4.15.0.1173.171  
linux-image-azure-lts-18.04 –  4.15.0.1181.149  
linux-image-gcp-lts-18.04 –  4.15.0.1166.179  
linux-image-generic –  4.15.0.229.213  
linux-image-kvm –  4.15.0.1156.147  
linux-image-lowlatency –  4.15.0.229.213  
linux-image-oracle-lts-18.04 –  4.15.0.1135.140  
linux-image-virtual –  4.15.0.229.213  
16.04 xenial linux-image-4.15.0-1135-oracle –  4.15.0-1135.146~16.04.1  
linux-image-4.15.0-1166-gcp –  4.15.0-1166.183~16.04.1  
linux-image-4.15.0-1173-aws –  4.15.0-1173.186~16.04.1  
linux-image-4.15.0-1181-azure –  4.15.0-1181.196~16.04.1  
linux-image-4.15.0-229-generic –  4.15.0-229.241~16.04.1  
linux-image-4.15.0-229-lowlatency –  4.15.0-229.241~16.04.1  
linux-image-aws-hwe –  4.15.0.1173.186~16.04.1  
linux-image-azure –  4.15.0.1181.196~16.04.1  
linux-image-gcp –  4.15.0.1166.183~16.04.1  
linux-image-generic-hwe-16.04 –  4.15.0.229.241~16.04.1  
linux-image-gke –  4.15.0.1166.183~16.04.1  
linux-image-lowlatency-hwe-16.04 –  4.15.0.229.241~16.04.1  
linux-image-oem –  4.15.0.229.241~16.04.1  
linux-image-oracle –  4.15.0.1135.146~16.04.1  
linux-image-virtual-hwe-16.04 –  4.15.0.229.241~16.04.1  

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References

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