Exploit/Advisories

==========================================================================
Ubuntu Security Notice USN-5390-1
April 26, 2022

linux, linux-gcp, linux-ibm, linux-lowlatency vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS

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 code. (CVE-2022-26490)

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.

References:
https://ubuntu.com/security/notices/USN-5390-1
CVE-2022-1015, CVE-2022-1016, CVE-2022-26490

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.15.0-27.28
https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1004.7
https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1003.3
https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-27.28

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