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Ubuntu 22.04 LTS: USN-5799-1 Critical: Linux Kernel Denial Of Service

ubuntu
Calendar Grey January 11, 2023
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-5799-1 reveals a critical kernel vulnerability leading to potential system failures and unauthorized access risks
The system could be made to crash or run programs as an administrator.

Summary

The system could be made to crash or run programs as an administrator.

Software Description:

- linux-oem-5.17: Linux kernel for OEM systems

- linux-oem-6.0: Linux kernel for OEM systems

Details:

Kyle Zeng discovered that the sysctl implementation in the Linux kernel

contained a stack-based buffer overflow. A local attacker could use this to

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

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical ubuntu linux kernel oem systems

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.17.0-1026-oem     5.17.0-1026.27
   linux-image-6.0.0-1010-oem      6.0.0-1010.10
   linux-image-oem-22.04           5.17.0.1026.24
   linux-image-oem-22.04a          5.17.0.1026.24
   linux-image-oem-22.04b          6.0.0.1010.10

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-5799-1

CVE-2022-4378

Severity
critical
Lowest
Low
Medium
High
Critical

January 11, 2023

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical ubuntu linux kernel oem systems

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1026.27
https://launchpad.net/ubuntu/+source/linux-oem-6.0/6.0.0-1010.10

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