Ubuntu Security Notices
USN-5517-1

USN-5517-1: Linux kernel (OEM) vulnerabilities

Publication date

13 July 2022

Overview

Several security issues were fixed in the Linux kernel.

Releases

20.04 LTS

Packages

linux-oem-5.14 - Linux kernel for OEM systems

Details

It was discovered that the Atheros ath9k wireless device driver in the
Linux kernel did not properly handle some error conditions, 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-2022-1679)

It was discovered that the virtio RPMSG bus driver in the Linux kernel
contained a double-free vulnerability in certain error conditions. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2022-34494)

Update instructions

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release	Package Version
20.04 focal	linux-image-oem-20.04c – 5.14.0.1045.41
	linux-image-oem-20.04b – 5.14.0.1045.41
	linux-image-oem-20.04d – 5.14.0.1045.41
	linux-image-oem-20.04 – 5.14.0.1045.41
	linux-image-5.14.0-1045-oem – 5.14.0-1045.51

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›