1. Ubuntu Security Notices
  2. USN-5700-1

USN-5700-1: Linux kernel vulnerabilities

Publication date

26 October 2022

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-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-ibm - Linux kernel for IBM cloud systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-lowlatency - Linux low latency kernel
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-raspi - Linux kernel for Raspberry Pi systems

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 a use-after-free vulnerability existed in the
WiFi driver stack in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (

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 a use-after-free vulnerability existed in the
WiFi driver stack in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2022-42719)

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)

Sönke Huster discovered that the WiFi driver stack in the Linux kernel
contained a NULL pointer dereference vulnerability in certain situations. A
physically proximate attacker could use this to cause a denial of service
(system crash). (CVE-2022-42722)

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
22.10 kinetic linux-image-5.19.0-1011-aws –  5.19.0-1011.12
linux-image-5.19.0-1006-raspi-nolpae –  5.19.0-1006.13
linux-image-5.19.0-23-generic –  5.19.0-23.24
linux-image-virtual –  5.19.0.23.22
linux-image-5.19.0-1010-ibm –  5.19.0-1010.11
linux-image-generic-64k –  5.19.0.23.22
linux-image-generic –  5.19.0.23.22
linux-image-aws –  5.19.0.1011.10
linux-image-5.19.0-1010-kvm –  5.19.0-1010.11
linux-image-5.19.0-1006-raspi –  5.19.0-1006.13
linux-image-ibm –  5.19.0.1010.9
linux-image-lowlatency-64k –  5.19.0.1009.8
linux-image-5.19.0-1010-gcp –  5.19.0-1010.11
linux-image-5.19.0-1010-azure –  5.19.0-1010.11
linux-image-5.19.0-23-generic-64k –  5.19.0-23.24
linux-image-azure –  5.19.0.1010.9
linux-image-raspi-nolpae –  5.19.0.1006.7
linux-image-5.19.0-1009-lowlatency-64k –  5.19.0-1009.10
linux-image-oem-22.04 –  5.19.0.23.22
linux-image-5.19.0-1009-lowlatency –  5.19.0-1009.10
linux-image-gcp –  5.19.0.1010.9
linux-image-5.19.0-1010-oracle –  5.19.0-1010.11
linux-image-oracle –  5.19.0.1010.9
linux-image-raspi –  5.19.0.1006.7
linux-image-kvm –  5.19.0.1010.9
linux-image-generic-lpae –  5.19.0.23.22
linux-image-lowlatency –  5.19.0.1009.8
linux-image-5.19.0-23-generic-lpae –  5.19.0-23.24

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References

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