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Ubuntu 22.04 LTS USN-6384-1 Critical: Linux-OEM-6.1 Memory Leak

ubuntu
Calendar Grey September 19, 2023
Dist Ubuntu Esm H88
Essential vulnerabilities addressed in Ubuntu Linux kernel (OEM) impacting private information; immediate updates necessary to ensure security.
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:

Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii

Oleksenko discovered that some AMD processors could leak stale data from

division operations in certain situations. A local attacker could possibly

use this to expose sensitive information. (CVE-2023-20588)

Lonial Con discovered that the netfilter subsystem in the Linux kernel

contained a memory leak when handling certain element flush operations. A

local attacker could use this to expose sensitive information (kernel

memory). (CVE-2023-4569)

Topics%20covered

Topics Covered

security advisory memory leak information exposure ubuntu 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-6.1.0-1022-oem      6.1.0-1022.22+1
   linux-image-oem-22.04c          6.1.0.1022.22

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-6384-1

CVE-2023-20588, CVE-2023-4569

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6384-1

Topics%20covered

Topics Covered

security advisory memory leak information exposure ubuntu linux-oem-6.1

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.1/6.1.0-1022.22

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