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Ubuntu 20.10: USN-4467-3 Critical: QEMU Denial of Service Risk

ubuntu
Calendar Grey February 22, 2021
Dist Ubuntu Esm H88
A critical announcement for Ubuntu focusing on a fix for QEMU issues and vulnerabilities linked to Denial-of-Service attacks. Refer to the update guidelines.
USN-4467-1 introduced a regression in QEMU.

Summary

Topics%20covered

Topics Covered

security advisory denial of service software patch critical update update instructions ubuntu system restart qemu regression

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: qemu 1:5.0-5ubuntu9.6 qemu-system 1:5.0-5ubuntu9.6 qemu-system-arm 1:5.0-5ubuntu9.6 qemu-system-mips 1:5.0-5ubuntu9.6 qemu-system-misc 1:5.0-5ubuntu9.6 qemu-system-ppc 1:5.0-5ubuntu9.6 qemu-system-s390x 1:5.0-5ubuntu9.6 qemu-system-sparc 1:5.0-5ubuntu9.6 qemu-system-x86 1:5.0-5ubuntu9.6 qemu-system-x86-microvm 1:5.0-5ubuntu9.6 qemu-system-x86-xen 1:5.0-5ubuntu9.6 Ubuntu 20.04 LTS: qemu 1:4.2-3ubuntu6.14 qemu-system 1:4.2-3ubuntu6.14 qemu-system-arm 1:4.2-3ubuntu6.14 qemu-system-mips 1:4.2-3ubuntu6.14 qemu-system-misc 1:4.2-3ubuntu6.14 qemu-system-ppc 1:4.2-3ubuntu6.14 qemu-system-s390x 1:4.2-3ubuntu6.14 qemu-system-sparc 1:4.2-3ubuntu6.14 qemu-system-x86 1:4.2-3ubuntu6.14 qemu-system-x86-microvm 1:4.2-3ubuntu6.14 qemu-system-x86-xen 1:4.2-3ubuntu6.14 Ubuntu 18.04 LTS: qemu 1:2.11+dfsg-1ubuntu7.36 qemu-system 1:2.11+dfsg-1ubuntu7.36 qemu-system-arm 1:2.11+dfsg-1ubuntu7.36 qemu-system-mips 1:2.11+dfsg-1ubuntu7.36 qemu-system-misc 1:2.11+dfsg-1ubuntu7.36 qemu-system-ppc 1:2.11+dfsg-1ubuntu7.36 qemu-system-s390x 1:2.11+dfsg-1ubuntu7.36 qemu-system-sparc 1:2.11+dfsg-1ubuntu7.36 qemu-system-x86 1:2.11+dfsg-1ubuntu7.36 Ubuntu 16.04 LTS: qemu 1:2.5+dfsg-5ubuntu10.51 qemu-system 1:2.5+dfsg-5ubuntu10.51 qemu-system-aarch64 1:2.5+dfsg-5ubuntu10.51 qemu-system-arm 1:2.5+dfsg-5ubuntu10.51 qemu-system-mips 1:2.5+dfsg-5ubuntu10.51 qemu-system-misc 1:2.5+dfsg-5ubuntu10.51 qemu-system-ppc 1:2.5+dfsg-5ubuntu10.51 qemu-system-s390x 1:2.5+dfsg-5ubuntu10.51 qemu-system-sparc 1:2.5+dfsg-5ubuntu10.51 qemu-system-x86 1:2.5+dfsg-5ubuntu10.51 After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4467-3

https://ubuntu.com/security/notices/USN-4467-1

https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1914883

Severity
critical
Lowest
Low
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Critical

February 22, 2021

Topics%20covered

Topics Covered

security advisory denial of service software patch critical update update instructions ubuntu system restart qemu regression

Package Information

https://launchpad.net/ubuntu/+source/qemu/1:5.0-5ubuntu9.6 https://launchpad.net/ubuntu/+source/qemu/1:4.2-3ubuntu6.14 https://launchpad.net/ubuntu/+source/qemu/1:2.11+dfsg-1ubuntu7.36 https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu10.51

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