Ubuntu 22.10: USN-5850-1 Critical: Kernel Memory Issues

ubuntu

February 9, 2023

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-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-ibm: Linux kernel for IBM cloud systems

- linux-kvm: Linux kernel for cloud environments

- linux-lowlatency: Linux low latency kernel

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi: Linux kernel for Raspberry Pi systems

Details:

It was discovered that the Bluetooth HCI implementation in the Linux kernel

did not properly deallocate memory in some situations. An attacker could

possibly use this cause a denial of service (memory exhaustion).

(CVE-2022-3619)

It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux

kernel did not properly perform bounds checking in some situations. A

physically proximate attacker could use this to craft a malicious USB

device that when inserted, could cause...

Read the Full Advisory

Topics Covered

security advisory denial of service kernel fix memory issue ubuntu system crash

Update Instructions

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

Ubuntu 22.10:
   linux-image-5.19.0-1013-raspi   5.19.0-1013.20
   linux-image-5.19.0-1013-raspi-nolpae  5.19.0-1013.20
   linux-image-5.19.0-1017-gcp     5.19.0-1017.19
   linux-image-5.19.0-1017-ibm     5.19.0-1017.19
   linux-image-5.19.0-1017-lowlatency  5.19.0-1017.18
   linux-image-5.19.0-1017-lowlatency-64k  5.19.0-1017.18
   linux-image-5.19.0-1017-oracle  5.19.0-1017.20
   linux-image-5.19.0-1018-kvm     5.19.0-1018.19
   linux-image-5.19.0-1019-aws     5.19.0-1019.20
   linux-image-5.19.0-31-generic   5.19.0-31.32
   linux-image-5.19.0-31-generic-64k  5.19.0-31.32
   linux-image-5.19.0-31-generic-lpae  5.19.0-31.32
   linux-image-aws                 5.19.0.1019.16
   linux-image-gcp                 5.19.0.1017.14
   linux-image-generic             5.19.0.31.28
   linux-image-generic-64k         5.19.0.31.28
   linux-image-generic-lpae        5.19.0.31.28
   linux-image-ibm                 5.19.0.1017.14
   linux-image-kvm                 5.19.0.1018.15
   linux-image-lowlatency          5.19.0.1017.14
   linux-image-lowlatency-64k      5.19.0.1017.14
   linux-image-oracle              5.19.0.1017.14
   linux-image-raspi               5.19.0.1013.12
   linux-image-raspi-nolpae        5.19.0.1013.12
   linux-image-virtual             5.19.0.31.28

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.