LSN-0085-1: Kernel Live Patch Security Notice
23 March 2022
Several security issues were fixed in the kernel.
Releases
Software Description
- aws - Linux kernel for Amazon Web Services (AWS) systems - (>= 4.15.0-1054, >= 5.4.0-1009, >= 5.4.0-1061, >= 4.4.0-1098, >= 4.4.0-1129)
- azure - Linux kernel for Microsoft Azure Cloud systems - (>= 5.4.0-1010, >= 4.15.0-1063, >= 4.15.0-1078, >= 4.15.0-1114)
- azure-4.15 - Linux kernel for Microsoft Azure Cloud systems - (>= 4.15.0-1115)
- gcp - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1009)
- generic-4.15 - Linux hardware enablement (HWE) kernel - (>= 4.15.0-69, >= 4.15.0-143, >= 4.15.0-69)
- generic-4.4 - Linux kernel - (>= 4.4.0-168, >= 4.4.0-211, >= 4.4.0-168)
- 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)
- gke-4.15 - Linux kernel for Google Container Engine (GKE) systems - (>= 4.15.0-1076)
- 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)
- ibm-5.4 - Linux kernel for IBM cloud systems - (>= 5.4.0-1009)
- lowlatency-4.15 - Linux hardware enablement (HWE) kernel - (>= 4.15.0-69, >= 4.15.0-143, >= 4.15.0-69)
- lowlatency-4.4 - Linux kernel - (>= 4.4.0-168, >= 4.4.0-211, >= 4.4.0-168)
- lowlatency-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26)
- oem - Linux kernel for OEM systems - (>= 4.15.0-1063)
Details
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges.(CVE-2022-0492)
Nick Gregory discovered that the Linux kernel incorrectly handled network
offload functionality. A local attacker could use this to cause a denial of
service or possibly execute arbitrary code.(CVE-2022-25636)
Checking update status
The problem can be corrected in these Livepatch versions:
| Kernel type | 20.04 | 18.04 | 16.04 | 14.04 |
|---|---|---|---|---|
| aws | 85.1 | 85.1 | 85.1 | — |
| azure | 85.1 | — | 85.1 | — |
| azure-4.15 | — | 85.1 | — | — |
| gcp | 85.1 | — | — | — |
| generic-4.15 | — | 85.1 | 85.1 | — |
| generic-4.4 | — | — | 85.1 | 85.1 |
| generic-5.4 | 85.2 | 85.2 | — | — |
| gke | 85.1 | — | — | — |
| gke-4.15 | — | 85.1 | — | — |
| gke-5.4 | — | 85.1 | — | — |
| gkeop | 85.1 | — | — | — |
| gkeop-5.4 | — | 85.1 | — | — |
| ibm | 85.1 | — | — | — |
| ibm-5.4 | — | 85.1 | — | — |
| lowlatency-4.15 | — | 85.1 | 85.1 | — |
| lowlatency-4.4 | — | — | 85.1 | 85.1 |
| lowlatency-5.4 | 85.2 | 85.2 | — | — |
| oem | — | 85.1 | — | — |
To check your kernel type and Livepatch version, enter this command:
canonical-livepatch status