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

USN-7179-1: Linux kernel vulnerabilities

Publication date

20 December 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

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-5.15.0-1057-gkeop –  5.15.0-1057.64
linux-image-5.15.0-1067-ibm –  5.15.0-1067.70
linux-image-5.15.0-1071-kvm –  5.15.0-1071.76
linux-image-5.15.0-128-lowlatency –  5.15.0-128.138
linux-image-5.15.0-128-lowlatency-64k –  5.15.0-128.138
linux-image-5.15.0-130-generic –  5.15.0-130.140
linux-image-5.15.0-130-generic-64k –  5.15.0-130.140
linux-image-5.15.0-130-generic-lpae –  5.15.0-130.140
linux-image-generic –  5.15.0.130.128
linux-image-generic-64k –  5.15.0.130.128
linux-image-generic-lpae –  5.15.0.130.128
linux-image-gkeop –  5.15.0.1057.56
linux-image-gkeop-5.15 –  5.15.0.1057.56
linux-image-ibm –  5.15.0.1067.63
linux-image-kvm –  5.15.0.1071.67
linux-image-lowlatency –  5.15.0.128.116
linux-image-lowlatency-64k –  5.15.0.128.116
linux-image-virtual –  5.15.0.130.128
20.04 focal linux-image-5.15.0-1067-ibm –  5.15.0-1067.70~20.04.1
linux-image-5.15.0-1072-oracle –  5.15.0-1072.78~20.04.1
linux-image-5.15.0-128-lowlatency –  5.15.0-128.138~20.04.1
linux-image-5.15.0-128-lowlatency-64k –  5.15.0-128.138~20.04.1
linux-image-ibm –  5.15.0.1067.70~20.04.1
linux-image-lowlatency-64k-hwe-20.04 –  5.15.0.128.138~20.04.1
linux-image-lowlatency-hwe-20.04 –  5.15.0.128.138~20.04.1
linux-image-oracle –  5.15.0.1072.78~20.04.1

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References

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