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Ubuntu 16.04 LTS: USN-4904-1 Critical Denial Of Service Notice

ubuntu
Calendar Grey April 13, 2021
Dist Ubuntu Esm H88
A range of critical kernel vulnerabilities resolved in Ubuntu's USN-4904-1 announcement for 18.04 and 20.04 ESM, highlighting enhancements in system security.
Several security issues were fixed in the Linux kernel.

Summary

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu vulnerability kernel system update Linux kernel

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.4.0-1091-kvm 4.4.0-1091.100 linux-image-4.4.0-1126-aws 4.4.0-1126.140 linux-image-4.4.0-1150-raspi2 4.4.0-1150.161 linux-image-4.4.0-1154-snapdragon 4.4.0-1154.164 linux-image-4.4.0-208-generic 4.4.0-208.240 linux-image-4.4.0-208-generic-lpae 4.4.0-208.240 linux-image-4.4.0-208-lowlatency 4.4.0-208.240 linux-image-4.4.0-208-powerpc-e500mc 4.4.0-208.240 linux-image-4.4.0-208-powerpc-smp 4.4.0-208.240 linux-image-4.4.0-208-powerpc64-emb 4.4.0-208.240 linux-image-4.4.0-208-powerpc64-smp 4.4.0-208.240 linux-image-aws 4.4.0.1126.131 linux-image-generic 4.4.0.208.214 linux-image-generic-lpae 4.4.0.208.214 linux-image-kvm 4.4.0.1091.89 linux-image-lowlatency 4.4.0.208.214 linux-image-powerpc-e500mc 4.4.0.208.214 linux-image-powerpc-smp 4.4.0.208.214 linux-image-powerpc64-emb 4.4.0.208.214 linux-image-powerpc64-smp 4.4.0.208.214 linux-image-raspi2 4.4.0.1150.150 linux-image-snapdragon 4.4.0.1154.146 linux-image-virtual 4.4.0.208.214 Ubuntu 14.04 ESM: linux-image-4.4.0-1090-aws 4.4.0-1090.94 linux-image-4.4.0-208-generic 4.4.0-208.240~14.04.1 linux-image-4.4.0-208-generic-lpae 4.4.0-208.240~14.04.1 linux-image-4.4.0-208-lowlatency 4.4.0-208.240~14.04.1 linux-image-aws 4.4.0.1090.87 linux-image-generic-lpae-lts-xenial 4.4.0.208.181 linux-image-generic-lts-xenial 4.4.0.208.181 linux-image-lowlatency-lts-xenial 4.4.0.208.181 linux-image-virtual-lts-xenial 4.4.0.208.181 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-4904-1

CVE-2015-1350, CVE-2017-16644, CVE-2017-5967, CVE-2018-13095,

CVE-2019-16231, CVE-2019-16232, CVE-2019-19061, CVE-2021-20261,

CVE-2021-26930, CVE-2021-26931, CVE-2021-28038

Severity
critical
Lowest
Low
Medium
High
Critical

April 13, 2021

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu vulnerability kernel system update Linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/4.4.0-208.240 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1126.140 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1091.100 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1150.161 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1154.164

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