Ubuntu 22.10: USN-5700-1 Critical Denial Of Service Issues

ubuntu

October 26, 2022

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-azure: Linux kernel for Microsoft Azure Cloud 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:

David Bouman and Billy Jheng Bing Jhong discovered that a race condition

existed in the io_uring subsystem in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial

of service (system crash) or possibly execute arbitrary code.

(CVE-2022-2602)

Sönke Huster discovered that an integer overflow vulnerability existed in

the WiFi driver stack in the Linux kernel, lea...

Read the Full Advisory

Topics Covered

security advisory denial of service buffer overflow critical ubuntu system crash linux kernel

Update Instructions

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

Ubuntu 22.10:
  linux-image-5.19.0-1006-raspi   5.19.0-1006.13
  linux-image-5.19.0-1006-raspi-nolpae  5.19.0-1006.13
  linux-image-5.19.0-1009-lowlatency  5.19.0-1009.10
  linux-image-5.19.0-1009-lowlatency-64k  5.19.0-1009.10
  linux-image-5.19.0-1010-azure   5.19.0-1010.11
  linux-image-5.19.0-1010-gcp     5.19.0-1010.11
  linux-image-5.19.0-1010-ibm     5.19.0-1010.11
  linux-image-5.19.0-1010-kvm     5.19.0-1010.11
  linux-image-5.19.0-1010-oracle  5.19.0-1010.11
  linux-image-5.19.0-1011-aws     5.19.0-1011.12
  linux-image-5.19.0-23-generic   5.19.0-23.24
  linux-image-5.19.0-23-generic-64k  5.19.0-23.24
  linux-image-5.19.0-23-generic-lpae  5.19.0-23.24
  linux-image-aws                 5.19.0.1011.10
  linux-image-azure               5.19.0.1010.9
  linux-image-gcp                 5.19.0.1010.9
  linux-image-generic             5.19.0.23.22
  linux-image-generic-64k         5.19.0.23.22
  linux-image-generic-lpae        5.19.0.23.22
  linux-image-ibm                 5.19.0.1010.9
  linux-image-kvm                 5.19.0.1010.9
  linux-image-lowlatency          5.19.0.1009.8
  linux-image-lowlatency-64k      5.19.0.1009.8
  linux-image-oem-22.04           5.19.0.23.22
  linux-image-oracle              5.19.0.1010.9
  linux-image-raspi               5.19.0.1006.7
  linux-image-raspi-nolpae        5.19.0.1006.7
  linux-image-virtual             5.19.0.23.22

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.