Ubuntu 21.10 USN-5240-1 Critical: Kernel Integer Underflow

ubuntu

January 19, 2022

The system could be made to crash or run programs as an administrator.

Summary

The system could be made to crash or run programs as an administrator.

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-5.11: Linux kernel for Amazon Web Services (AWS) systems

- linux-azure-5.11: Linux kernel for Microsoft Azure cloud systems

- linux-bluefield: Linux kernel for NVIDIA BlueField platforms

- linux-gcp-5.11: 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

- linux-oem-5.10: Linux kernel for OEM systems

- linux-oem-5.13: Linux kerne...

Read the Full Advisory

Topics Covered

security advisory denial of service critical Ubuntu system update linux kernel integer underflow

Update Instructions

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

Ubuntu 21.10:
  linux-image-5.13.0-1010-kvm     5.13.0-1010.11
  linux-image-5.13.0-1011-aws     5.13.0-1011.12
  linux-image-5.13.0-1012-azure   5.13.0-1012.14
  linux-image-5.13.0-1012-gcp     5.13.0-1012.15
  linux-image-5.13.0-1015-oracle  5.13.0-1015.19
  linux-image-5.13.0-1015-raspi   5.13.0-1015.17
  linux-image-5.13.0-1015-raspi-nolpae  5.13.0-1015.17
  linux-image-5.13.0-27-generic   5.13.0-27.29
  linux-image-5.13.0-27-generic-64k  5.13.0-27.29
  linux-image-5.13.0-27-generic-lpae  5.13.0-27.29
  linux-image-5.13.0-27-lowlatency  5.13.0-27.29
  linux-image-aws                 5.13.0.1011.12
  linux-image-azure               5.13.0.1012.12
  linux-image-gcp                 5.13.0.1012.11
  linux-image-generic             5.13.0.27.37
  linux-image-generic-64k         5.13.0.27.37
  linux-image-generic-lpae        5.13.0.27.37
  linux-image-gke                 5.13.0.1012.11
  linux-image-kvm                 5.13.0.1010.10
  linux-image-lowlatency          5.13.0.27.37
  linux-image-oem-20.04           5.13.0.27.37
  linux-image-oracle              5.13.0.1015.15
  linux-image-raspi               5.13.0.1015.20
  linux-image-raspi-nolpae        5.13.0.1015.20
  linux-image-virtual             5.13.0.27.37

Ubuntu 21.04:
  linux-image-5.11.0-1024-kvm     5.11.0-1024.27
  linux-image-5.11.0-1027-aws     5.11.0-1027.30
  linux-image-5.11.0-1027-azure   5.11.0-1027.30
  linux-image-5.11.0-1027-oracle  5.11.0-1027.30
  linux-image-5.11.0-1027-raspi   5.11.0-1027.30
  linux-image-5.11.0-1027-raspi-nolpae  5.11.0-1027.30
  linux-image-5.11.0-1028-gcp     5.11.0-1028.32
  linux-image-5.11.0-49-generic   5.11.0-49.55
  linux-image-5.11.0-49-generic-64k  5.11.0-49.55
  linux-image-5.11.0-49-generic-lpae  5.11.0-49.55
  linux-image-5.11.0-49-lowlatency  5.11.0-49.55
  linux-image-aws                 5.11.0.1027.26
  linux-image-azure               5.11.0.1027.26
  linux-image-gcp                 5.11.0.1028.26
  linux-image-generic             5.11.0.49.48
  linux-image-generic-64k         5.11.0.49.48
  linux-image-generic-lpae        5.11.0.49.48
  linux-image-gke                 5.11.0.1028.26
  linux-image-kvm                 5.11.0.1024.24
  linux-image-lowlatency          5.11.0.49.48
  linux-image-oem-20.04           5.11.0.49.48
  linux-image-oracle              5.11.0.1027.26
  linux-image-raspi               5.11.0.1027.24
  linux-image-raspi-nolpae        5.11.0.1027.24
  linux-image-virtual             5.11.0.49.48

Ubuntu 20.04 LTS:
  linux-image-5.10.0-1057-oem     5.10.0-1057.61
  linux-image-5.11.0-1027-aws     5.11.0-1027.30~20.04.1
  linux-image-5.11.0-1027-azure   5.11.0-1027.30~20.04.1
  linux-image-5.11.0-1027-oracle  5.11.0-1027.30~20.04.1
  linux-image-5.11.0-1028-gcp     5.11.0-1028.32~20.04.1
  linux-image-5.13.0-1028-oem     5.13.0-1028.35
  linux-image-5.14.0-1020-oem     5.14.0-1020.22
  linux-image-5.4.0-1012-ibm      5.4.0-1012.13
  linux-image-5.4.0-1025-bluefield  5.4.0-1025.28
  linux-image-5.4.0-1031-gkeop    5.4.0-1031.32
  linux-image-5.4.0-1050-raspi    5.4.0-1050.56
  linux-image-5.4.0-1053-kvm      5.4.0-1053.55
  linux-image-5.4.0-1059-gke      5.4.0-1059.62
  linux-image-5.4.0-1061-oracle   5.4.0-1061.65
  linux-image-5.4.0-1062-gcp      5.4.0-1062.66
  linux-image-5.4.0-1067-azure    5.4.0-1067.70
  linux-image-5.4.0-96-generic    5.4.0-96.109
  linux-image-5.4.0-96-generic-lpae  5.4.0-96.109
  linux-image-5.4.0-96-lowlatency  5.4.0-96.109
  linux-image-aws                 5.11.0.1027.30~20.04.25
  linux-image-aws-lts-20.04       5.4.0.1063.65
  linux-image-azure               5.11.0.1027.30~20.04.25
  linux-image-azure-lts-20.04     5.4.0.1067.65
  linux-image-bluefield           5.4.0.1025.26
  linux-image-gcp                 5.11.0.1028.32~20.04.26
  linux-image-gcp-lts-20.04       5.4.0.1062.72
  linux-image-generic             5.4.0.96.100
  linux-image-generic-lpae        5.4.0.96.100
  linux-image-gke                 5.4.0.1059.69
  linux-image-gke-5.4             5.4.0.1059.69
  linux-image-gkeop               5.4.0.1031.34
  linux-image-gkeop-5.4           5.4.0.1031.34
  linux-image-ibm                 5.4.0.1012.13
  linux-image-ibm-lts-20.04       5.4.0.1012.13
  linux-image-kvm                 5.4.0.1053.52
  linux-image-lowlatency          5.4.0.96.100
  linux-image-oem                 5.4.0.96.100
  linux-image-oem-20.04           5.10.0.1057.57
  linux-image-oem-20.04b          5.10.0.1057.57
  linux-image-oem-20.04c          5.13.0.1028.30
  linux-image-oem-20.04d          5.14.0.1020.17
  linux-image-oem-osp1            5.4.0.96.100
  linux-image-oracle              5.11.0.1027.30~20.04.19
  linux-image-oracle-lts-20.04    5.4.0.1061.61
  linux-image-raspi               5.4.0.1050.84
  linux-image-raspi2              5.4.0.1050.84
  linux-image-virtual             5.4.0.96.100

Ubuntu 18.04 LTS:
  linux-image-5.4.0-1031-gkeop    5.4.0-1031.32~18.04.1
  linux-image-5.4.0-1050-raspi    5.4.0-1050.56~18.04.1
  linux-image-5.4.0-1059-gke      5.4.0-1059.62~18.04.1
  linux-image-5.4.0-1061-oracle   5.4.0-1061.65~18.04.1
  linux-image-5.4.0-1062-gcp      5.4.0-1062.66~18.04.1
  linux-image-5.4.0-1067-azure    5.4.0-1067.70~18.04.1
  linux-image-5.4.0-96-generic    5.4.0-96.109~18.04.1
  linux-image-5.4.0-96-generic-lpae  5.4.0-96.109~18.04.1
  linux-image-5.4.0-96-lowlatency  5.4.0-96.109~18.04.1
  linux-image-aws                 5.4.0.1063.45
  linux-image-azure               5.4.0.1067.46
  linux-image-gcp                 5.4.0.1062.47
  linux-image-generic-hwe-18.04   5.4.0.96.109~18.04.84
  linux-image-generic-lpae-hwe-18.04  5.4.0.96.109~18.04.84
  linux-image-gke-5.4             5.4.0.1059.62~18.04.23
  linux-image-gkeop-5.4           5.4.0.1031.32~18.04.31
  linux-image-lowlatency-hwe-18.04  5.4.0.96.109~18.04.84
  linux-image-oem                 5.4.0.96.109~18.04.84
  linux-image-oem-osp1            5.4.0.96.109~18.04.84
  linux-image-oracle              5.4.0.1061.65~18.04.40
  linux-image-raspi-hwe-18.04     5.4.0.1050.52
  linux-image-snapdragon-hwe-18.04  5.4.0.96.109~18.04.84
  linux-image-virtual-hwe-18.04   5.4.0.96.109~18.04.84

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.