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Ubuntu 22.04 LTS USN-5529-1 Critical: Linux Kernel Denial of Service Fixes

ubuntu
Calendar Grey July 20, 2022
Dist Ubuntu Esm H88
A variety of security vulnerabilities in the Linux kernel have been addressed in Ubuntu 22.04 LTS, encompassing both denial of service and code execution defects.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-5.17: 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)

Yongkang Jia discovered that the KVM hypervisor implementation in the Linux

kernel did not properly handle guest TLB mapping invalidation requests in

some situations. An attacker in a guest VM could use this to cause a denial

of service (system crash) in the host OS. (CVE-2022-1789)

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

implementation in the Linux kernel did not properly handle an illegal

instruction in a guest, resulting in a null pointer dereference. An

attacker in a guest VM could use this to cause a denial o...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical Ubuntu kernel linux-oem-5.17

Update Instructions

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

Ubuntu 22.04 LTS:
  linux-image-5.17.0-1013-oem     5.17.0-1013.14
  linux-image-oem-22.04           5.17.0.1013.12
  linux-image-oem-22.04a          5.17.0.1013.12

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-5529-1

CVE-2022-1652, CVE-2022-1679, CVE-2022-1789, CVE-2022-1852,

CVE-2022-1973, CVE-2022-2078, CVE-2022-21123, CVE-2022-21125,

CVE-2022-21166, CVE-2022-34494, CVE-2022-34495

Severity
critical
Lowest
Low
Medium
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Critical

July 21, 2022

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical Ubuntu kernel linux-oem-5.17

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1013.14

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