Ubuntu 21.10 USN-5317-1 Moderate Kernel Denial Of Service

ubuntu

March 8, 2022

Several security issues were fixed in the Linux kernel.

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: Linux kernel for Microsoft Azure Cloud systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi: Linux kernel for Raspberry Pi systems

- linux-aws-5.13: Linux kernel for Amazon Web Services (AWS) systems

- linux-azure-5.13: Linux kernel for Microsoft Azure cloud systems

- linux-gcp-5.13: Linux kernel for Google Cloud Platform (GCP) systems

- linux-hwe-5.13: Linux hardware enablement (HWE) kernel

- linux-oem-5.14: Linux kernel for OEM systems

- linux-oracle-5.13: Linux kernel for Oracle Cloud systems

Details:

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 possi...

Read the Full Advisory

Topics Covered

security advisory moderate denial of service Ubuntu kernel CVE-2022-25636 network offload

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.10:
  linux-image-5.13.0-1016-kvm     5.13.0-1016.17
  linux-image-5.13.0-1017-aws     5.13.0-1017.19
  linux-image-5.13.0-1017-azure   5.13.0-1017.19
  linux-image-5.13.0-1019-gcp     5.13.0-1019.23
  linux-image-5.13.0-1020-raspi   5.13.0-1020.22
  linux-image-5.13.0-1020-raspi-nolpae  5.13.0-1020.22
  linux-image-5.13.0-1021-oracle  5.13.0-1021.26
  linux-image-5.13.0-35-generic   5.13.0-35.40
  linux-image-5.13.0-35-generic-64k  5.13.0-35.40
  linux-image-5.13.0-35-generic-lpae  5.13.0-35.40
  linux-image-5.13.0-35-lowlatency  5.13.0-35.40
  linux-image-aws                 5.13.0.1017.18
  linux-image-azure               5.13.0.1017.17
  linux-image-gcp                 5.13.0.1019.17
  linux-image-generic             5.13.0.35.44
  linux-image-generic-64k         5.13.0.35.44
  linux-image-generic-lpae        5.13.0.35.44
  linux-image-gke                 5.13.0.1019.17
  linux-image-kvm                 5.13.0.1016.16
  linux-image-lowlatency          5.13.0.35.44
  linux-image-oem-20.04           5.13.0.35.44
  linux-image-oracle              5.13.0.1021.21
  linux-image-raspi               5.13.0.1020.25
  linux-image-raspi-nolpae        5.13.0.1020.25
  linux-image-virtual             5.13.0.35.44

Ubuntu 20.04 LTS:
  linux-image-5.13.0-1017-aws     5.13.0-1017.19~20.04.1
  linux-image-5.13.0-1017-azure   5.13.0-1017.19~20.04.1
  linux-image-5.13.0-1019-gcp     5.13.0-1019.23~20.04.1
  linux-image-5.13.0-1021-oracle  5.13.0-1021.26~20.04.1
  linux-image-5.13.0-35-generic   5.13.0-35.40~20.04.1
  linux-image-5.13.0-35-generic-64k  5.13.0-35.40~20.04.1
  linux-image-5.13.0-35-generic-lpae  5.13.0-35.40~20.04.1
  linux-image-5.13.0-35-lowlatency  5.13.0-35.40~20.04.1
  linux-image-5.14.0-1027-oem     5.14.0-1027.30
  linux-image-aws                 5.13.0.1017.19~20.04.10
  linux-image-azure               5.13.0.1017.19~20.04.7
  linux-image-gcp                 5.13.0.1019.23~20.04.1
  linux-image-generic-64k-hwe-20.04  5.13.0.35.40~20.04.20
  linux-image-generic-hwe-20.04   5.13.0.35.40~20.04.20
  linux-image-generic-lpae-hwe-20.04  5.13.0.35.40~20.04.20
  linux-image-lowlatency-hwe-20.04  5.13.0.35.40~20.04.20
  linux-image-oem-20.04           5.14.0.1027.24
  linux-image-oem-20.04b          5.14.0.1027.24
  linux-image-oem-20.04c          5.14.0.1027.24
  linux-image-oem-20.04d          5.14.0.1027.24
  linux-image-oracle              5.13.0.1021.26~20.04.1
  linux-image-virtual-hwe-20.04   5.13.0.35.40~20.04.20

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.