A Linux kernel security update has been released for Ubuntu Linux 20.04 LTS and 22.04 LTS.

USN-5594-1: Linux kernel vulnerabilities

=========================================================================
Ubuntu Security Notice USN-5594-1
September 02, 2022

linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15,
linux-gcp, linux-gcp-5.15, linux-gke, linux-gke-5.15, linux-gkeop,
linux-ibm, linux-kvm, linux-lowlatency vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

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-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-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke-5.15: Linux kernel for Google Container Engine (GKE) systems

Details:

Asaf Modelevsky discovered that the Intel(R) 10GbE PCI Express (ixgbe)
Ethernet driver for the Linux kernel performed insufficient control flow
management. A local attacker could possibly use this to cause a denial of
service. (CVE-2021-33061)

It was discovered that the IP implementation in the Linux kernel did not
provide sufficient randomization when calculating port offsets. An attacker
could possibly use this to expose sensitive information. (CVE-2022-1012)

Norbert Slusarek discovered that a race condition existed in the perf
subsystem in the Linux kernel, resulting in a use-after-free vulnerability.
A privileged local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-1729)

Qiuhao Li, Gaoning Pan, and Yongkang Jia discovered that the KVM hypervisor
implementation in the Linux kernel did not properly handle an illegal
instruction in a guest, resulting in a null pointer dereference. An
attacker in a guest VM could use this to cause a denial of service (system
crash) in the host OS. (CVE-2022-1852)

It was discovered that the UDF file system implementation in the Linux
kernel contained an out-of-bounds write vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2022-1943)

Gerald Lee discovered that the NTFS file system implementation in the Linux
kernel did not properly handle certain error conditions, leading to a use-
after-free vulnerability. A local attacker could use this to cause a denial
of service (system crash) or possibly expose sensitive information.
(CVE-2022-1973)

It was discovered that the device-mapper verity (dm-verity) driver in the
Linux kernel did not properly verify targets being loaded into the device-
mapper table. A privileged attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2022-2503)

Zheyu Ma discovered that the Intel iSMT SMBus host controller driver in the
Linux kernel contained an out-of-bounds write vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-2873)

Selim Enes Karaduman discovered that a race condition existed in the pipe
buffers implementation of the Linux kernel. A local attacker could use this
to cause a denial of service (system crash) or possibly escalate
privileges. (CVE-2022-2959)

Update instructions:

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

Ubuntu 22.04 LTS:
linux-image-5.15.0-1002-gkeop 5.15.0-1002.4
linux-image-5.15.0-1013-ibm 5.15.0-1013.15
linux-image-5.15.0-1015-gke 5.15.0-1015.18
linux-image-5.15.0-1017-gcp 5.15.0-1017.23
linux-image-5.15.0-1017-kvm 5.15.0-1017.21
linux-image-5.15.0-1019-aws 5.15.0-1019.23
linux-image-5.15.0-1019-azure 5.15.0-1019.24
linux-image-5.15.0-47-generic 5.15.0-47.51
linux-image-5.15.0-47-generic-64k 5.15.0-47.51
linux-image-5.15.0-47-generic-lpae 5.15.0-47.51
linux-image-5.15.0-47-lowlatency 5.15.0-47.53
linux-image-5.15.0-47-lowlatency-64k 5.15.0-47.53
linux-image-aws 5.15.0.1019.19
linux-image-azure 5.15.0.1019.18
linux-image-gcp 5.15.0.1017.15
linux-image-generic 5.15.0.47.47
linux-image-generic-64k 5.15.0.47.47
linux-image-generic-64k-hwe-22.04 5.15.0.47.47
linux-image-generic-hwe-22.04 5.15.0.47.47
linux-image-generic-lpae 5.15.0.47.47
linux-image-generic-lpae-hwe-22.04 5.15.0.47.47
linux-image-gke 5.15.0.1015.17
linux-image-gke-5.15 5.15.0.1015.17
linux-image-gkeop 5.15.0.1002.4
linux-image-gkeop-5.15 5.15.0.1002.4
linux-image-ibm 5.15.0.1013.12
linux-image-kvm 5.15.0.1017.15
linux-image-lowlatency 5.15.0.47.44
linux-image-lowlatency-64k 5.15.0.47.44
linux-image-lowlatency-64k-hwe-22.04 5.15.0.47.44
linux-image-lowlatency-hwe-22.04 5.15.0.47.44
linux-image-oem-20.04 5.15.0.47.47
linux-image-virtual 5.15.0.47.47
linux-image-virtual-hwe-22.04 5.15.0.47.47

Ubuntu 20.04 LTS:
linux-image-5.15.0-1015-gke 5.15.0-1015.18~20.04.1
linux-image-5.15.0-1017-gcp 5.15.0-1017.23~20.04.2
linux-image-5.15.0-1019-aws 5.15.0-1019.23~20.04.1
linux-image-5.15.0-1019-azure 5.15.0-1019.24~20.04.1
linux-image-aws 5.15.0.1019.23~20.04.11
linux-image-azure 5.15.0.1019.22~20.04.12
linux-image-gcp 5.15.0.1017.23~20.04.1
linux-image-gke-5.15 5.15.0.1015.18~20.04.1

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.

References:
  https://ubuntu.com/security/notices/USN-5594-1
CVE-2021-33061, CVE-2022-1012, CVE-2022-1729, CVE-2022-1852,
CVE-2022-1943, CVE-2022-1973, CVE-2022-2503, CVE-2022-2873,
CVE-2022-2959

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.15.0-47.51
  https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1019.23
  https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1019.24
  https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1017.23
  https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1015.18
  https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1002.4
  https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1013.15
  https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1017.21
  https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-47.53
  https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1019.23~20.04.1
  https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1019.24~20.04.1
  https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1017.23~20.04.2
  https://launchpad.net/ubuntu/+source/linux-gke-5.15/5.15.0-1015.18~20.04.1