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Ubuntu 22.04 LTS: USN-5860-1 Critical: Multiple Kernel Issues

ubuntu
Calendar Grey February 9, 2023
Dist Ubuntu Esm H88
Enhance your Ubuntu 22.04 LTS installation to address significant vulnerabilities in the Linux kernel that could permit exploitation.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-gke: Linux kernel for Google Container Engine (GKE) 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.

(CVE-2022-4378)

Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation

in the Linux kernel contained multiple use-after-free vulnerabilities. A

physically proximate attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2022-42896)

It was discovered that a memory leak existed in the Unix domain socket

implementation of the Linux kernel. A local attacker could use this to

cause a denial of service (memory exhaustion). (CVE-2022-3543)

It was discovered that the Bluetooth HCI implementation in the Linux kernel

did not p...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical kernel linux-gke

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1027-gke     5.15.0-1027.32
   linux-image-gke                 5.15.0.1027.26
   linux-image-gke-5.15            5.15.0.1027.26

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-5860-1

CVE-2022-3543, CVE-2022-3619, CVE-2022-3623, CVE-2022-3628,

CVE-2022-3640, CVE-2022-3643, CVE-2022-41849, CVE-2022-41850,

CVE-2022-42895, CVE-2022-42896, CVE-2022-4378, CVE-2022-45934,

CVE-2022-47940, CVE-2023-0590

Severity
critical
Lowest
Low
Medium
High
Critical

February 09, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical kernel linux-gke

Package Information

https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1027.32

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