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Ubuntu 22.04 LTS USN-6465-3 Critical: Linux-gke DoS Threat

ubuntu
Calendar Grey November 10, 2023
Dist Ubuntu Esm H88
Urgent patches for GKE security flaws in Ubuntu kernel; solutions for numerous denial of service threats. Take action now!
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:

Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in

the Linux kernel contained a race condition, leading to a null pointer

dereference vulnerability. A local attacker could use this to cause a

denial of service (system crash). (CVE-2023-31083)

Lin Ma discovered that the Netlink Transformation (XFRM) subsystem in the

Linux kernel contained a null pointer dereference vulnerability in some

situations. A local privileged attacker could use this to cause a denial of

service (system crash). (CVE-2023-3772)

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu linux-gke

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1046-gke     5.15.0-1046.51
   linux-image-gke                 5.15.0.1046.45
   linux-image-gke-5.15            5.15.0.1046.45

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-6465-3

https://ubuntu.com/security/notices/USN-6465-1

CVE-2023-31083, CVE-2023-3772

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6465-3

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu linux-gke

Package Information

https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1046.51

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