USN-5691-1: Linux kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-5691-1
October 19, 2022
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4,
linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop,
linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle,
linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 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-bluefield: Linux kernel for NVIDIA BlueField platforms
- 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-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems
- linux-raspi-5.4: 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 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:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
linux-image-5.4.0-1036-ibm 5.4.0-1036.41
linux-image-5.4.0-1049-bluefield 5.4.0-1049.55
linux-image-5.4.0-1056-gkeop 5.4.0-1056.60
linux-image-5.4.0-1073-raspi 5.4.0-1073.84
linux-image-5.4.0-1078-kvm 5.4.0-1078.84
linux-image-5.4.0-1086-gke 5.4.0-1086.93
linux-image-5.4.0-1086-oracle 5.4.0-1086.95
linux-image-5.4.0-1088-aws 5.4.0-1088.96
linux-image-5.4.0-1092-gcp 5.4.0-1092.101
linux-image-5.4.0-1094-azure 5.4.0-1094.100
linux-image-5.4.0-131-generic 5.4.0-131.147
linux-image-5.4.0-131-generic-lpae 5.4.0-131.147
linux-image-5.4.0-131-lowlatency 5.4.0-131.147
linux-image-aws-lts-20.04 5.4.0.1088.87
linux-image-azure-lts-20.04 5.4.0.1094.90
linux-image-bluefield 5.4.0.1049.47
linux-image-gcp-lts-20.04 5.4.0.1092.96
linux-image-generic 5.4.0.131.131
linux-image-generic-lpae 5.4.0.131.131
linux-image-gke 5.4.0.1086.93
linux-image-gke-5.4 5.4.0.1086.93
linux-image-gkeop 5.4.0.1056.56
linux-image-gkeop-5.4 5.4.0.1056.56
linux-image-ibm 5.4.0.1036.64
linux-image-ibm-lts-20.04 5.4.0.1036.64
linux-image-kvm 5.4.0.1078.74
linux-image-lowlatency 5.4.0.131.131
linux-image-oem 5.4.0.131.131
linux-image-oem-osp1 5.4.0.131.131
linux-image-oracle-lts-20.04 5.4.0.1086.82
linux-image-raspi 5.4.0.1073.105
linux-image-raspi2 5.4.0.1073.105
linux-image-virtual 5.4.0.131.131
Ubuntu 18.04 LTS:
linux-image-5.4.0-1036-ibm 5.4.0-1036.41~18.04.1
linux-image-5.4.0-1073-raspi 5.4.0-1073.84~18.04.1
linux-image-5.4.0-1086-oracle 5.4.0-1086.95~18.04.1
linux-image-5.4.0-1088-aws 5.4.0-1088.96~18.04.1
linux-image-5.4.0-1092-gcp 5.4.0-1092.101~18.04.1
linux-image-5.4.0-1094-azure 5.4.0-1094.100~18.04.1
linux-image-5.4.0-131-generic 5.4.0-131.147~18.04.1
linux-image-5.4.0-131-generic-lpae 5.4.0-131.147~18.04.1
linux-image-5.4.0-131-lowlatency 5.4.0-131.147~18.04.1
linux-image-aws 5.4.0.1088.67
linux-image-azure 5.4.0.1094.70
linux-image-gcp 5.4.0.1092.70
linux-image-generic-hwe-18.04 5.4.0.131.147~18.04.108
linux-image-generic-lpae-hwe-18.04 5.4.0.131.147~18.04.108
linux-image-ibm 5.4.0.1036.49
linux-image-lowlatency-hwe-18.04 5.4.0.131.147~18.04.108
linux-image-oem 5.4.0.131.147~18.04.108
linux-image-oem-osp1 5.4.0.131.147~18.04.108
linux-image-oracle 5.4.0.1086.95~18.04.62
linux-image-raspi-hwe-18.04 5.4.0.1073.72
linux-image-snapdragon-hwe-18.04 5.4.0.131.147~18.04.108
linux-image-virtual-hwe-18.04 5.4.0.131.147~18.04.108
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-5691-1
CVE-2022-2602, CVE-2022-41674, CVE-2022-42720, CVE-2022-42721
Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-131.147
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1088.96
https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1094.100
https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1049.55
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1092.101
https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1086.93
https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1056.60
https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1036.41
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1078.84
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1086.95
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1073.84
https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1088.96~18.04.1
https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1094.100~18.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1092.101~18.04.1
https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-131.147~18.04.1
https://launchpad.net/ubuntu/+source/linux-ibm-5.4/5.4.0-1036.41~18.04.1
https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1086.95~18.04.1
https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1073.84~18.04.1
A Linux kernel security update has been released for Ubuntu Linux 18.04 LTS and 20.04 LTS.
