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Ubuntu 20.04 LTS: USN-5416-1 Moderate: Linux Kernel Denial Of Service

ubuntu
Calendar Grey May 11, 2022
Dist Ubuntu Esm H88
Multiple vulnerabilities identified in the Ubuntu Linux kernel have been resolved with an update targeting OEM installations; the advisory outlines potential denial of service threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-5.14: Linux kernel for OEM systems

Details:

Qiuhao Li, Gaoning Pan and Yongkang Jia discovered that the KVM

implementation in the Linux kernel did not properly perform guest page

table updates in some situations. An attacker in a guest vm could possibly

use this to crash the host OS. (CVE-2022-1158)

It was discovered that the implementation of X.25 network protocols in

the Linux kernel did not terminate link layer sessions properly. A local

attacker could possibly use this to cause a denial of service (system

crash). (CVE-2022-1516)

It was discovered that the 8 Devices USB2CAN interface implementation

in the Linux kernel did not properly handle certain error conditions,

leading to a double-free. A local attacker could possibly use this to

cause a denial of service (system crash). (CVE-2022-28388)

It was discovered that the Microchip CAN BUS Analyzer interface

implementation in the Linux ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security fix system update ubuntu linux kernel oem systems

Update Instructions

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

Ubuntu 20.04 LTS:
  linux-image-5.14.0-1036-oem     5.14.0-1036.40
  linux-image-oem-20.04           5.14.0.1036.33
  linux-image-oem-20.04b          5.14.0.1036.33
  linux-image-oem-20.04c          5.14.0.1036.33
  linux-image-oem-20.04d          5.14.0.1036.33

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-5416-1

CVE-2022-1158, CVE-2022-1516, CVE-2022-28388, CVE-2022-28389,

CVE-2022-28390

May 12, 2022

Topics%20covered

Topics Covered

security advisory denial of service security fix system update ubuntu linux kernel oem systems

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1036.40

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