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Ubuntu 20.04: USN-6339-2 High Severity: Linux Kernel Issues

ubuntu
Calendar Grey September 8, 2023
Dist Ubuntu Esm H88
Critical patches have been issued to rectify various kernel flaws in Ubuntu, enhancing system stability and mitigating potential threats to users' safety.
Several security issues were fixed in the Linux kernel.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems - linux-gkeop-5.15: Linux kernel for Google Container Engine (GKE) systems Details: It was discovered that the NTFS file system implementation in the Linux kernel did not properly validate MFT flags in certain situations. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-48425) Zi Fan Tan discovered that the binder IPC implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-21255) It was discovered that a race condition existed in the f2fs file system in the Linux kernel, leading to a ...

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Topics%20covered

Topics Covered

security advisory denial of service update instructions ubuntu system crash kernel updates linux kernel

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.15.0-1027-gkeop 5.15.0-1027.32~20.04.1 linux-image-5.15.0-1041-gcp 5.15.0-1041.49~20.04.1 linux-image-gcp 5.15.0.1041.49~20.04.1 linux-image-gkeop-5.15 5.15.0.1027.32~20.04.23 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-6339-2

https://ubuntu.com/security/notices/USN-6339-1

CVE-2022-48425, CVE-2023-21255, CVE-2023-2898, CVE-2023-31084,

CVE-2023-3212, CVE-2023-38426, CVE-2023-38428, CVE-2023-38429

Ubuntu Security Notice USN-6339-2

Topics%20covered

Topics Covered

security advisory denial of service update instructions ubuntu system crash kernel updates linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1041.49~20.04.1 https://launchpad.net/ubuntu/+source/linux-gkeop-5.15/5.15.0-1027.32~20.04.1

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