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Ubuntu 22.04 LTS USN-5856-1 Critical: Kernel DoS and Execution Threats

ubuntu
Calendar Grey February 9, 2023
Dist Ubuntu Esm H88
Essential vulnerabilities addressed in Ubuntu LTS concerning linux-oem-6.1. Urgent patches required to mitigate potential execution threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-6.1: Linux kernel for OEM systems

Details:

Davide Ornaghi discovered that the netfilter subsystem in the Linux kernel

did not properly handle VLAN headers in some situations. A local attacker

could use this to cause a denial of service (system crash) or possibly

execute arbitrary code. (CVE-2023-0179)

Hu Jiahui discovered that multiple race conditions existed in the Advanced

Linux Sound Architecture (ALSA) framework, leading to use-after-free

vulnerabilities. A local attacker could use these to cause a denial of

service (system crash) or possibly execute arbitrary code. (CVE-2022-1048)

It was discovered that a use-after-free vulnerability existed in the SGI

GRU driver in the Linux kernel. A local attacker could possibly use this to

cause a denial of service (system crash) or possibly execute arbitrary

code. (CVE-2022-3424)

Topics%20covered

Topics Covered

security advisory denial of service security update code execution Ubuntu kernel linux-oem-6.1

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-6.1.0-1006-oem      6.1.0-1006.6
   linux-image-oem-22.04c          6.1.0.1006.6

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-5856-1

CVE-2022-1048, CVE-2022-3424, CVE-2023-0179

Severity
critical
Lowest
Low
Medium
High
Critical

February 09, 2023

Topics%20covered

Topics Covered

security advisory denial of service security update code execution Ubuntu kernel linux-oem-6.1

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.1/6.1.0-1006.6

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