A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS
– Ubuntu 22.04 LTS
Summary
Several security issues were fixed in the kernel.
Software Description
– linux – Linux kernel
– linux-aws – Linux kernel for Amazon Web Services (AWS) systems
– linux-azure – Linux kernel for Microsoft Azure Cloud systems
– linux-gcp – Linux kernel for Google Cloud Platform (GCP) systems
– linux-gke – Linux kernel for Google Container Engine (GKE) systems
– linux-gkeop – Linux kernel for Google Container Engine (GKE) systems
– linux-ibm – Linux kernel for IBM cloud systems
Details
It was discovered that a race condition existed in the memory address
space accounting implementation in the Linux kernel, leading to a
use-after-free vulnerability. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2022-41222)
Sönke Huster discovered that a use-after-free vulnerability existed in
the WiFi driver stack in the Linux kernel. A physically proximate
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-42719)
Update instructions
The problem can be corrected by updating your kernel livepatch to the
following versions:
Ubuntu 20.04 LTS
aws – 91.1
azure – 91.1
gcp – 91.1
generic – 91.1
gke – 91.1
gkeop – 91.1
ibm – 91.1
lowlatency – 91.1
Ubuntu 18.04 LTS
aws – 91.1
azure – 91.1
gcp – 91.1
generic – 91.1
gke – 91.1
gkeop – 91.1
ibm – 91.1
lowlatency – 91.1
Ubuntu 22.04 LTS
aws – 91.1
azure – 91.1
gcp – 91.1
generic – 91.1
gke – 91.1
ibm – 91.1
Support Information
Kernels older than the levels listed below do not receive livepatch
updates. If you are running a kernel version earlier than the one listed
below, please upgrade your kernel as soon as possible.
Ubuntu 20.04 LTS
linux-aws-5.15 – 5.15.0-1000
linux-aws – 5.4.0-1009
linux-aws – 5.4.0-1061
linux-azure-5.15 – 5.15.0-1069
linux-azure – 5.4.0-1010
linux-gcp-5.15 – 5.15.0-1000
linux-gcp – 5.4.0-1009
linux-gke-5.15 – 5.15.0-1000
linux-gke – 5.4.0-1033
linux-gkeop – 5.4.0-1009
linux-hwe – 5.15.0-0
linux-ibm-5.15 – 5.15.0-1000
linux-ibm – 5.4.0-1009
linux-oem – 5.4.0-26
linux – 5.4.0-26
Ubuntu 18.04 LTS
linux-aws-5.4 – 5.4.0-1069
linux-aws – 4.15.0-1054
linux-aws – 4.15.0-1119
linux-azure-4.15 – 4.15.0-1115
linux-azure-5.4 – 5.4.0-1069
linux-gcp-4.15 – 4.15.0-1121
linux-gcp-5.4 – 5.4.0-1069
linux-gke-4.15 – 4.15.0-1076
linux-gke-5.4 – 5.4.0-1009
linux-gkeop-5.4 – 5.4.0-1007
linux-hwe-5.4 – 5.4.0-26
linux-ibm-5.4 – 5.4.0-1009
linux-oem – 4.15.0-1063
linux – 4.15.0-69
Ubuntu 16.04 ESM
linux-aws-hwe – 4.15.0-1126
linux-aws – 4.4.0-1098
linux-aws – 4.4.0-1129
linux-azure – 4.15.0-1063
linux-azure – 4.15.0-1078
linux-azure – 4.15.0-1114
linux-gcp – 4.15.0-1118
linux-hwe – 4.15.0-143
linux-hwe – 4.15.0-69
linux – 4.4.0-168
linux – 4.4.0-211
Ubuntu 22.04 LTS
linux-aws – 5.15.0-1000
linux-azure – 5.15.0-1000
linux-gcp – 5.15.0-1000
linux-gke – 5.15.0-1000
linux-ibm – 5.15.0-1000
linux – 5.15.0-24
linux – 5.15.0-25
Ubuntu 14.04 ESM
linux-lts-xenial – 4.4.0-168
References
– CVE-2022-41222
– CVE-2022-42719
