1. Ubuntu Security Notices
  2. USN-6972-2

USN-6972-2: Linux kernel (AWS) vulnerabilities

Publication date

22 August 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems

Details

Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)

It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel, leading to a null pointer dereference vulnerability. A
privileged local attacker could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)

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:

  • SuperH RISC architecture;
  • User-Mode Linux (UML);
  • GPU drivers;
  • MMC subsystem;
  • Network drivers;
  • PHY drivers;
  • Pin...

Yuxuan Hu discovered that the Bluetooth RFCOMM protocol driver in the Linux
Kernel contained a race condition, leading to a NULL pointer dereference.
An attacker could possibly use this to cause a denial of service (system
crash). (CVE-2024-22099)

It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel, leading to a null pointer dereference vulnerability. A
privileged local attacker could use this to possibly cause a denial of
service (system crash). (CVE-2024-24860)

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:

  • SuperH RISC architecture;
  • User-Mode Linux (UML);
  • GPU drivers;
  • MMC subsystem;
  • Network drivers;
  • PHY drivers;
  • Pin controllers subsystem;
  • Xen hypervisor drivers;
  • GFS2 file system;
  • Core kernel;
  • Bluetooth subsystem;
  • IPv4 networking;
  • IPv6 networking;
  • HD-audio driver;
  • ALSA SH drivers

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-4.15.0-1172-aws –  4.15.0-1172.185  
linux-image-aws-lts-18.04 –  4.15.0.1172.170  
16.04 xenial linux-image-4.15.0-1172-aws –  4.15.0-1172.185~16.04.1  
linux-image-aws-hwe –  4.15.0.1172.185~16.04.1  

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References

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