1. Ubuntu Security Notices
  2. USN-5791-1

USN-5791-1: Linux kernel vulnerabilities

Publication date

6 January 2023

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-5.4 - 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-hwe-5.4 - Linux hardware enablement (HWE) kernel
  • linux-ibm - Linux kernel for IBM cloud systems
  • linux-ibm-5.4 - Linux kernel for IBM cloud systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-oracle-5.4 - Linux kernel for Oracle Cloud systems
  • linux-raspi - Linux kernel for Raspberry Pi systems
  • linux-raspi-5.4 - Linux kernel for Raspberry Pi systems

Details

It was discovered that a race condition existed in the Android Binder IPC
subsystem in the Linux kernel, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-20421)

David Leadbeater discovered that the netfilter IRC protocol tracking
implementation in the Linux Kernel incorrectly handled certain message
payloads in some situations. A remote attacker could possibly use this to
cause a denial of service or bypass firewall filtering. (CVE-2022-2663)

It was discovered that the Intel 740 frame buffer driver in the Linux
kernel contained a divide by zero vulnerability. A local attacker could use
this to cause a denial of service (system crash). (CVE-2022-3061)

It was discovered that the sound subsystem in the...

It was discovered that a race condition existed in the Android Binder IPC
subsystem in the Linux kernel, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-20421)

David Leadbeater discovered that the netfilter IRC protocol tracking
implementation in the Linux Kernel incorrectly handled certain message
payloads in some situations. A remote attacker could possibly use this to
cause a denial of service or bypass firewall filtering. (CVE-2022-2663)

It was discovered that the Intel 740 frame buffer driver in the Linux
kernel contained a divide by zero vulnerability. A local attacker could use
this to cause a denial of service (system crash). (CVE-2022-3061)

It was discovered that the sound subsystem in the Linux kernel contained a
race condition in some situations. A local attacker could use this to cause
a denial of service (system crash). (CVE-2022-3303)

Gwnaun Jung discovered that the SFB packet scheduling implementation in the
Linux kernel contained a use-after-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2022-3586)

It was discovered that the NILFS2 file system implementation in the Linux
kernel did not properly deallocate memory in certain error conditions. An
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2022-3646)

Hyunwoo Kim discovered that an integer overflow vulnerability existed in
the PXA3xx graphics driver in the Linux kernel. A local attacker could
possibly use this to cause a denial of service (system crash).
(CVE-2022-39842)

It was discovered that a race condition existed in the EFI capsule loader
driver in the Linux kernel, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-40307)

Zheng Wang and Zhuorao Yang discovered that the RealTek RTL8712U wireless
driver in the Linux kernel contained a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-4095)

It was discovered that the USB monitoring (usbmon) component in the Linux
kernel did not properly set permissions on memory mapped in to user space
processes. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-43750)

Jann Horn discovered a race condition existed in the Linux kernel when
unmapping VMAs in certain situations, resulting in possible use-after-free
vulnerabilities. A local attacker could possibly use this to cause a denial
of service (system crash) or execute arbitrary code. (CVE-2022-39188)

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
20.04 focal linux-image-gkeop –  5.4.0.1061.59
linux-image-virtual –  5.4.0.136.134
linux-image-raspi2 –  5.4.0.1078.108
linux-image-generic –  5.4.0.136.134
linux-image-oem –  5.4.0.136.134
linux-image-5.4.0-136-generic –  5.4.0-136.153
linux-image-ibm –  5.4.0.1041.67
linux-image-5.4.0-1093-aws –  5.4.0-1093.101
linux-image-oem-osp1 –  5.4.0.136.134
linux-image-5.4.0-1083-kvm –  5.4.0-1083.89
linux-image-gkeop-5.4 –  5.4.0.1061.59
linux-image-5.4.0-1091-gke –  5.4.0-1091.98
linux-image-ibm-lts-20.04 –  5.4.0.1041.67
linux-image-5.4.0-1097-gcp –  5.4.0-1097.106
linux-image-gcp-lts-20.04 –  5.4.0.1097.99
linux-image-aws-lts-20.04 –  5.4.0.1093.90
linux-image-gke –  5.4.0.1091.96
linux-image-5.4.0-136-lowlatency –  5.4.0-136.153
linux-image-5.4.0-1041-ibm –  5.4.0-1041.46
linux-image-5.4.0-1061-gkeop –  5.4.0-1061.65
linux-image-oracle-lts-20.04 –  5.4.0.1091.84
linux-image-raspi –  5.4.0.1078.108
linux-image-5.4.0-1078-raspi –  5.4.0-1078.89
linux-image-gke-5.4 –  5.4.0.1091.96
linux-image-kvm –  5.4.0.1083.77
linux-image-5.4.0-136-generic-lpae –  5.4.0-136.153
linux-image-generic-lpae –  5.4.0.136.134
linux-image-lowlatency –  5.4.0.136.134
linux-image-5.4.0-1091-oracle –  5.4.0-1091.100
18.04 bionic linux-image-generic-hwe-18.04 –  5.4.0.136.153~18.04.111
linux-image-snapdragon-hwe-18.04 –  5.4.0.136.153~18.04.111
linux-image-oem –  5.4.0.136.153~18.04.111
linux-image-aws –  5.4.0.1093.71
linux-image-raspi-hwe-18.04 –  5.4.0.1078.75
linux-image-5.4.0-136-generic –  5.4.0-136.153~18.04.1
linux-image-5.4.0-1097-gcp –  5.4.0-1097.106~18.04.1
linux-image-ibm –  5.4.0.1041.52
linux-image-5.4.0-1093-aws –  5.4.0-1093.102~18.04.2
linux-image-oem-osp1 –  5.4.0.136.153~18.04.111
linux-image-generic-lpae-hwe-18.04 –  5.4.0.136.153~18.04.111
linux-image-5.4.0-1091-oracle –  5.4.0-1091.100~18.04.1
linux-image-virtual-hwe-18.04 –  5.4.0.136.153~18.04.111
linux-image-5.4.0-136-generic-lpae –  5.4.0-136.153~18.04.1
linux-image-gcp –  5.4.0.1097.73
linux-image-5.4.0-136-lowlatency –  5.4.0-136.153~18.04.1
linux-image-5.4.0-1041-ibm –  5.4.0-1041.46~18.04.1
linux-image-oracle –  5.4.0.1091.100~18.04.65
linux-image-5.4.0-1078-raspi –  5.4.0-1078.89~18.04.1
linux-image-lowlatency-hwe-18.04 –  5.4.0.136.153~18.04.111

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References

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