1. Ubuntu Security Notices
  2. USN-5691-1

USN-5691-1: Linux kernel vulnerabilities

Publication date

19 October 2022

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

David Bouman and Billy Jheng Bing Jhong discovered that a race condition
existed in the io_uring 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-2022-2602)

Sönke Huster discovered that an integer overflow vulnerability existed in
the WiFi driver stack in the Linux kernel, leading to a buffer overflow. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-41674)

Sönke Huster discovered that the WiFi driver stack in the Linux kernel did
not properly perform reference counting in some situations, leading to a
use-after-free vulnerability. A physically proximate attacker could use
this to cause a denial of service (system crash) or...

David Bouman and Billy Jheng Bing Jhong discovered that a race condition
existed in the io_uring 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-2022-2602)

Sönke Huster discovered that an integer overflow vulnerability existed in
the WiFi driver stack in the Linux kernel, leading to a buffer overflow. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-41674)

Sönke Huster discovered that the WiFi driver stack in the Linux kernel did
not properly perform reference counting in some situations, leading to a
use-after-free vulnerability. A physically proximate attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2022-42720)

Sönke Huster discovered that the WiFi driver stack in the Linux kernel did
not properly handle BSSID/SSID lists in some situations. A physically
proximate attacker could use this to cause a denial of service (infinite
loop). (CVE-2022-42721)

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-5.4.0-1086-gke –  5.4.0-1086.93
linux-image-gkeop –  5.4.0.1056.56
linux-image-5.4.0-131-lowlatency –  5.4.0-131.147
linux-image-5.4.0-1086-oracle –  5.4.0-1086.95
linux-image-5.4.0-1078-kvm –  5.4.0-1078.84
linux-image-oem –  5.4.0.131.131
linux-image-5.4.0-1092-gcp –  5.4.0-1092.101
linux-image-5.4.0-1088-aws –  5.4.0-1088.96
linux-image-bluefield –  5.4.0.1049.47
linux-image-5.4.0-1056-gkeop –  5.4.0-1056.60
linux-image-oem-osp1 –  5.4.0.131.131
linux-image-5.4.0-1094-azure –  5.4.0-1094.100
linux-image-5.4.0-1036-ibm –  5.4.0-1036.41
linux-image-azure-lts-20.04 –  5.4.0.1094.90
linux-image-gkeop-5.4 –  5.4.0.1056.56
linux-image-5.4.0-131-generic-lpae –  5.4.0-131.147
linux-image-5.4.0-1073-raspi –  5.4.0-1073.84
linux-image-ibm-lts-20.04 –  5.4.0.1036.64
linux-image-virtual –  5.4.0.131.131
linux-image-gcp-lts-20.04 –  5.4.0.1092.96
linux-image-ibm –  5.4.0.1036.64
linux-image-aws-lts-20.04 –  5.4.0.1088.87
linux-image-raspi2 –  5.4.0.1073.105
linux-image-5.4.0-131-generic –  5.4.0-131.147
linux-image-kvm –  5.4.0.1078.74
linux-image-5.4.0-1049-bluefield –  5.4.0-1049.55
linux-image-oracle-lts-20.04 –  5.4.0.1086.82
linux-image-generic –  5.4.0.131.131
linux-image-raspi –  5.4.0.1073.105
linux-image-gke-5.4 –  5.4.0.1086.93
linux-image-gke –  5.4.0.1086.93
linux-image-generic-lpae –  5.4.0.131.131
linux-image-lowlatency –  5.4.0.131.131
18.04 bionic linux-image-generic-hwe-18.04 –  5.4.0.131.147~18.04.108
linux-image-snapdragon-hwe-18.04 –  5.4.0.131.147~18.04.108
linux-image-5.4.0-131-lowlatency –  5.4.0-131.147~18.04.1
linux-image-5.4.0-1086-oracle –  5.4.0-1086.95~18.04.1
linux-image-oem –  5.4.0.131.147~18.04.108
linux-image-aws –  5.4.0.1088.67
linux-image-gcp –  5.4.0.1092.70
linux-image-raspi-hwe-18.04 –  5.4.0.1073.72
linux-image-5.4.0-1092-gcp –  5.4.0-1092.101~18.04.1
linux-image-5.4.0-1088-aws –  5.4.0-1088.96~18.04.1
linux-image-ibm –  5.4.0.1036.49
linux-image-oem-osp1 –  5.4.0.131.147~18.04.108
linux-image-5.4.0-1073-raspi –  5.4.0-1073.84~18.04.1
linux-image-generic-lpae-hwe-18.04 –  5.4.0.131.147~18.04.108
linux-image-5.4.0-1094-azure –  5.4.0-1094.100~18.04.1
linux-image-5.4.0-1036-ibm –  5.4.0-1036.41~18.04.1
linux-image-5.4.0-131-generic-lpae –  5.4.0-131.147~18.04.1
linux-image-azure –  5.4.0.1094.70
linux-image-virtual-hwe-18.04 –  5.4.0.131.147~18.04.108
linux-image-5.4.0-131-generic –  5.4.0-131.147~18.04.1
linux-image-oracle –  5.4.0.1086.95~18.04.62
linux-image-lowlatency-hwe-18.04 –  5.4.0.131.147~18.04.108

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References

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