1. Ubuntu Security Notices
  2. USN-7179-2

USN-7179-2: Linux kernel vulnerabilities

Publication date

6 January 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-5.15 - Linux kernel for Amazon Web Services (AWS) systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-5.15 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe-5.15 - Linux hardware enablement (HWE) kernel
  • linux-nvidia - Linux kernel for NVIDIA systems
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-raspi - Linux kernel for Raspberry Pi systems

Details

Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux
kernel contained a type-confusion error. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-12351)

Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)

Andy Nguyen discovered that the Bluetooth HCI event packet parser in the
Linux kernel did not properly handle event advertisements of certain sizes,
leading to a heap-based buffer overflow. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (

Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux
kernel contained a type-confusion error. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-12351)

Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)

Andy Nguyen discovered that the Bluetooth HCI event packet parser in the
Linux kernel did not properly handle event advertisements of certain sizes,
leading to a heap-based buffer overflow. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-24490)

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;
  • Media drivers;
  • Network drivers;
  • SMB network file system;
  • Bluetooth subsystem;
  • Amateur Radio drivers;
  • Network traffic control;
  • VMware vSockets driver

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
22.04 jammy linux-image-5.15.0-1070-nvidia –  5.15.0-1070.71
linux-image-5.15.0-1070-nvidia-lowlatency –  5.15.0-1070.71
linux-image-5.15.0-1070-raspi –  5.15.0-1070.73
linux-image-5.15.0-1073-oracle –  5.15.0-1073.79
linux-image-5.15.0-1074-gcp –  5.15.0-1074.83
linux-image-5.15.0-1076-aws –  5.15.0-1076.83
linux-image-aws-lts-22.04 –  5.15.0.1076.78
linux-image-gcp-lts-22.04 –  5.15.0.1074.70
linux-image-nvidia –  5.15.0.1070.70
linux-image-nvidia-lowlatency –  5.15.0.1070.70
linux-image-oracle-lts-22.04 –  5.15.0.1073.69
linux-image-raspi –  5.15.0.1070.68
linux-image-raspi-nolpae –  5.15.0.1070.68
20.04 focal linux-image-5.15.0-1074-gcp –  5.15.0-1074.83~20.04.1
linux-image-5.15.0-1075-aws –  5.15.0-1075.82~20.04.1
linux-image-5.15.0-130-generic –  5.15.0-130.140~20.04.1
linux-image-5.15.0-130-generic-64k –  5.15.0-130.140~20.04.1
linux-image-5.15.0-130-generic-lpae –  5.15.0-130.140~20.04.1
linux-image-aws –  5.15.0.1075.82~20.04.1
linux-image-gcp –  5.15.0.1074.83~20.04.1
linux-image-generic-64k-hwe-20.04 –  5.15.0.130.140~20.04.1
linux-image-generic-hwe-20.04 –  5.15.0.130.140~20.04.1
linux-image-generic-lpae-hwe-20.04 –  5.15.0.130.140~20.04.1
linux-image-oem-20.04 –  5.15.0.130.140~20.04.1
linux-image-oem-20.04b –  5.15.0.130.140~20.04.1
linux-image-oem-20.04c –  5.15.0.130.140~20.04.1
linux-image-oem-20.04d –  5.15.0.130.140~20.04.1
linux-image-virtual-hwe-20.04 –  5.15.0.130.140~20.04.1

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References

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