Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

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