1. Ubuntu Security Notices
  2. USN-6972-3

USN-6972-3: Linux kernel (Azure) vulnerabilities

Publication date

23 August 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

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-4.15.0-1180-azure –  4.15.0-1180.195  
linux-image-azure-lts-18.04 –  4.15.0.1180.148  
16.04 xenial linux-image-4.15.0-1180-azure –  4.15.0-1180.195~16.04.1  
linux-image-azure –  4.15.0.1180.195~16.04.1  
14.04 trusty linux-image-4.15.0-1180-azure –  4.15.0-1180.195~14.04.1  
linux-image-azure –  4.15.0.1180.195~14.04.1  

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References

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