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Ubuntu 16.04 LTS USN-6327-1 Moderate: Linux-KVM Denial of Service

ubuntu
Calendar Grey September 1, 2023
Dist Ubuntu Esm H88
Multiple vulnerabilities detected in the Linux kernel on Ubuntu 16.04 LTS have been documented, along with recommended measures for their remediation.
Several security issues were fixed in the Linux kernel.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS (Available with Ubuntu Pro) Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-kvm: Linux kernel for cloud environments Details: Zheng Zhang discovered that the device-mapper implementation in the Linux kernel did not properly handle locking during table_clear() operations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-2269) It was discovered that a use-after-free vulnerability existed in the HFS+ file system implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-2985) It was discovered that the DVB Core driver in the Linux kernel did not properly handle locking events in certain situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-31084) It was ...

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Topics%20covered

Topics Covered

security advisory denial of service kernel local access ubuntu system crash linux-kvm

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS (Available with Ubuntu Pro): linux-image-4.4.0-1123-kvm 4.4.0-1123.133 linux-image-kvm 4.4.0.1123.120 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-6327-1

CVE-2023-2269, CVE-2023-2985, CVE-2023-31084, CVE-2023-3567,

CVE-2023-3611, CVE-2023-3776

Ubuntu Security Notice USN-6327-1

Topics%20covered

Topics Covered

security advisory denial of service kernel local access ubuntu system crash linux-kvm

Package Information

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