LSN-0091-1: Kernel Live Patch Security Notice
14 February 2023
Several security issues were fixed in the kernel.
Releases
Software Description
- aws - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.4.0-1009, >= 5.4.0-1061, >= 5.15.0-1000)
- aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.4.0-1069)
- azure - Linux kernel for Microsoft Azure Cloud systems - (>= 5.4.0-1010, >= 5.15.0-1000)
- azure-5.4 - Linux kernel for Microsoft Azure cloud systems - (>= 5.4.0-1069)
- gcp - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1009, >= 5.15.0-1000)
- gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1069)
- generic-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26)
- gke - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1033, >= 5.15.0-1000)
- gke-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009)
- gkeop - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009)
- gkeop-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1007)
- ibm - Linux kernel for IBM cloud systems - (>= 5.4.0-1009, >= 5.15.0-1000)
- ibm-5.4 - Linux kernel for IBM cloud systems - (>= 5.4.0-1009)
- linux - Linux kernel - (>= 5.15.0-24)
- lowlatency-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26)
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)
Checking update status
The problem can be corrected in these Livepatch versions:
| Kernel type | 22.04 | 20.04 | 18.04 |
|---|---|---|---|
| aws | 91.1 | 91.1 | — |
| aws-5.4 | — | — | 91.1 |
| azure | 91.1 | 91.1 | — |
| azure-5.4 | — | — | 91.1 |
| gcp | 91.1 | 91.1 | — |
| gcp-5.4 | — | — | 91.1 |
| generic-5.4 | — | 91.1 | 91.1 |
| gke | 91.1 | 91.1 | — |
| gke-5.4 | — | — | 91.1 |
| gkeop | — | 91.1 | — |
| gkeop-5.4 | — | — | 91.1 |
| ibm | 91.1 | 91.1 | — |
| ibm-5.4 | — | — | 91.1 |
| linux | 91.1 | — | — |
| lowlatency-5.4 | — | 91.1 | 91.1 |
To check your kernel type and Livepatch version, enter this command:
canonical-livepatch status