USN-5164-1: Linux kernel vulnerabilities
=========================================================================
Ubuntu Security Notice USN-5164-1
November 30, 2021
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15,
linux-dell300x, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle,
linux-raspi2, linux-snapdragon vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-dell300x: Linux kernel for Dell 300x platforms
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi2: Linux kernel for Raspberry Pi systems
- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors
- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-hwe: Linux hardware enablement (HWE) kernel
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)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
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
Ubuntu 16.04 ESM:
linux-image-4.15.0-1084-oracle 4.15.0-1084.92~16.04.1
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-generic-hwe-16.04 4.15.0.163.156
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
Ubuntu 14.04 ESM:
linux-image-4.15.0-1127-azure 4.15.0-1127.140~14.04.1
linux-image-azure 4.15.0.1127.100
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-5164-1
CVE-2021-37159, CVE-2021-3744, CVE-2021-3764
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.15.0-163.171
https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1116.123
https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1127.140
https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1031.36
https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1112.126
https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1103.105
https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1084.92
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1099.106
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1116.125
A Linux kernel security update has been released for Ubuntu Linux 14.04 ESM, 16.04 ESM, and 18.04 LTS.
