Ubuntu 22.04 LTS: USN-7179-1 Critical: Multiple Kernel Issues

ubuntu

December 20, 2024

Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems

- linux-ibm: Linux kernel for IBM cloud systems

- linux-kvm: Linux kernel for cloud environments

- linux-lowlatency: Linux low latency kernel

- linux-ibm-5.15: Linux kernel for IBM cloud systems

- linux-lowlatency-hwe-5.15: Linux low latency kernel

- linux-oracle-5.15: Linux kernel for Oracle Cloud 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 info...

Read the Full Advisory

Topics Covered

security advisory denial of service software patch Ubuntu system update linux kernel Bluetooth exploit

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
   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

Ubuntu 20.04 LTS
   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

After a standard system update you need to reboot your computer to make
all the necessary changes.

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.