1. Ubuntu Security Notices
  2. USN-5164-1

USN-5164-1: Linux kernel vulnerabilities

Publication date

30 November 2021

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the Option USB High Speed Mobile device driver in
the Linux kernel did not properly handle error conditions. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2021-37159)

It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)

It was discovered that the Option USB High Speed Mobile device driver in
the Linux kernel did not properly handle error conditions. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2021-37159)

It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.04 bionic linux-image-4.15.0-1031-dell300x –  4.15.0-1031.36
linux-image-4.15.0-1084-oracle –  4.15.0-1084.92
linux-image-4.15.0-1099-raspi2 –  4.15.0-1099.106
linux-image-4.15.0-1103-kvm –  4.15.0-1103.105
linux-image-4.15.0-1112-gcp –  4.15.0-1112.126
linux-image-4.15.0-1116-aws –  4.15.0-1116.123
linux-image-4.15.0-1116-snapdragon –  4.15.0-1116.125
linux-image-4.15.0-1127-azure –  4.15.0-1127.140
linux-image-4.15.0-163-generic –  4.15.0-163.171
linux-image-4.15.0-163-generic-lpae –  4.15.0-163.171
linux-image-4.15.0-163-lowlatency –  4.15.0-163.171
linux-image-aws-lts-18.04 –  4.15.0.1116.119
linux-image-azure-lts-18.04 –  4.15.0.1127.100
linux-image-dell300x –  4.15.0.1031.33
linux-image-gcp-lts-18.04 –  4.15.0.1112.131
linux-image-generic –  4.15.0.163.152
linux-image-generic-lpae –  4.15.0.163.152
linux-image-kvm –  4.15.0.1103.99
linux-image-lowlatency –  4.15.0.163.152
linux-image-oracle-lts-18.04 –  4.15.0.1084.94
linux-image-raspi2 –  4.15.0.1099.97
linux-image-snapdragon –  4.15.0.1116.119
linux-image-virtual –  4.15.0.163.152
16.04 xenial linux-image-4.15.0-1084-oracle –  4.15.0-1084.92~16.04.1  
linux-image-4.15.0-1112-gcp –  4.15.0-1112.126~16.04.1  
linux-image-4.15.0-1116-aws –  4.15.0-1116.123~16.04.1  
linux-image-4.15.0-1127-azure –  4.15.0-1127.140~16.04.1  
linux-image-4.15.0-163-generic –  4.15.0-163.171~16.04.1  
linux-image-4.15.0-163-lowlatency –  4.15.0-163.171~16.04.1  
linux-image-aws-hwe –  4.15.0.1116.106  
linux-image-azure –  4.15.0.1127.118  
linux-image-gcp –  4.15.0.1112.113  
linux-image-generic-hwe-16.04 –  4.15.0.163.156  
linux-image-gke –  4.15.0.1112.113  
linux-image-lowlatency-hwe-16.04 –  4.15.0.163.156  
linux-image-oem –  4.15.0.163.156  
linux-image-oracle –  4.15.0.1084.72  
linux-image-virtual-hwe-16.04 –  4.15.0.163.156  
14.04 trusty linux-image-4.15.0-1127-azure –  4.15.0-1127.140~14.04.1  
linux-image-azure –  4.15.0.1127.100  

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References

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