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Ubuntu 23.10 USN-6537-1 Critical: Denial Of Service in Linux Kernel

ubuntu
Calendar Grey December 6, 2023
Dist Ubuntu Esm H88
Multiple security flaws resolved in the Ubuntu 23.10 Linux kernel specifically for Google Cloud Platform. Immediate updates recommended.
Several security issues were fixed in the Linux kernel.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems Details: Yu Hao discovered that the UBI driver in the Linux kernel did not properly check for MTD with zero erasesize during device attachment. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-31085) Lucas Leong discovered that the netfilter subsystem in the Linux kernel did not properly validate some attributes passed from userspace. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-39189) Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial ...

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Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash linux-gcp

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 23.10: linux-image-6.5.0-1010-gcp 6.5.0-1010.10 linux-image-gcp 6.5.0.1010.10 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-6537-1

CVE-2023-31085, CVE-2023-39189, CVE-2023-4244, CVE-2023-42754,

CVE-2023-45898, CVE-2023-5090, CVE-2023-5158, CVE-2023-5178,

CVE-2023-5345, CVE-2023-5633, CVE-2023-5717

Severity
critical
Lowest
Low
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Critical

Ubuntu Security Notice USN-6537-1

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash linux-gcp

Package Information

https://launchpad.net/ubuntu/+source/linux-gcp/6.5.0-1010.10

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