Ubuntu 22.04 LTS USN-5390-1 Urgent: Security Vulnerabilities in Kernel

ubuntu

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

- linux-ibm: Linux kernel for IBM cloud systems

- linux-lowlatency: Linux low latency kernel

Details:

David Bouman discovered that the netfilter subsystem in the Linux kernel

did not properly validate passed user register indices. A local attacker

could use this to cause a denial of service or possibly execute arbitrary

code. (CVE-2022-1015)

David Bouman discovered that the netfilter subsystem in the Linux kernel

did not initialize memory in some situations. A local attacker could use

this to expose sensitive information (kernel memory). (CVE-2022-1016)

It was discovered that the ST21NFCA NFC driver in the Linux kernel did not

properly validate the size of certain data in EVT_TRANSACTION events. A

physically proximate attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary...

Read the Full Advisory

Topics Covered

security advisory denial of service critical arbitrary code execution Ubuntu kernel

Update Instructions

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

Ubuntu 22.04 LTS:
  linux-image-5.15.0-1003-ibm     5.15.0-1003.3
  linux-image-5.15.0-1004-gcp     5.15.0-1004.7
  linux-image-5.15.0-27-generic   5.15.0-27.28
  linux-image-5.15.0-27-generic-64k  5.15.0-27.28
  linux-image-5.15.0-27-generic-lpae  5.15.0-27.28
  linux-image-5.15.0-27-lowlatency  5.15.0-27.28
  linux-image-5.15.0-27-lowlatency-64k  5.15.0-27.28
  linux-image-gcp                 5.15.0.1004.5
  linux-image-generic             5.15.0.27.30
  linux-image-generic-64k         5.15.0.27.30
  linux-image-generic-lpae        5.15.0.27.30
  linux-image-ibm                 5.15.0.1003.4
  linux-image-lowlatency          5.15.0.27.28
  linux-image-lowlatency-64k      5.15.0.27.28
  linux-image-oem-20.04           5.15.0.27.30
  linux-image-virtual             5.15.0.27.30

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.