==========================================================================
Ubuntu Security Notice USN-5692-1
October 19, 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-hwe-5.15, linux-ibm, linux-kvm, linux-lowlatency,
linux-lowlatency-hwe-5.15, linux-oem-5.14, linux-oracle, linux-raspi
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-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- 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
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-lowlatency-hwe-5.15: Linux low latency kernel
- linux-oem-5.14: Linux kernel for OEM 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. (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:

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1007-gkeop   5.15.0-1007.10
   linux-image-5.15.0-1017-ibm     5.15.0-1017.20
   linux-image-5.15.0-1017-raspi   5.15.0-1017.19
   linux-image-5.15.0-1017-raspi-nolpae  5.15.0-1017.19
   linux-image-5.15.0-1019-gke     5.15.0-1019.23
   linux-image-5.15.0-1020-kvm     5.15.0-1020.24
   linux-image-5.15.0-1021-gcp     5.15.0-1021.28
   linux-image-5.15.0-1021-oracle  5.15.0-1021.27
   linux-image-5.15.0-1022-aws     5.15.0-1022.26
   linux-image-5.15.0-1022-azure   5.15.0-1022.27
   linux-image-5.15.0-52-generic   5.15.0-52.58
   linux-image-5.15.0-52-generic-64k  5.15.0-52.58
   linux-image-5.15.0-52-generic-lpae  5.15.0-52.58
   linux-image-5.15.0-52-lowlatency  5.15.0-52.58
   linux-image-5.15.0-52-lowlatency-64k  5.15.0-52.58
   linux-image-aws                 5.15.0.1022.22
   linux-image-aws-lts-22.04       5.15.0.1022.22
   linux-image-azure               5.15.0.1022.21
   linux-image-azure-lts-22.04     5.15.0.1022.21
   linux-image-gcp                 5.15.0.1021.18
   linux-image-generic             5.15.0.52.52
   linux-image-generic-64k         5.15.0.52.52
   linux-image-generic-64k-hwe-22.04  5.15.0.52.52
   linux-image-generic-hwe-22.04   5.15.0.52.52
   linux-image-generic-lpae        5.15.0.52.52
   linux-image-generic-lpae-hwe-22.04  5.15.0.52.52
   linux-image-gke                 5.15.0.1019.20
   linux-image-gke-5.15            5.15.0.1019.20
   linux-image-gkeop               5.15.0.1007.8
   linux-image-gkeop-5.15          5.15.0.1007.8
   linux-image-ibm                 5.15.0.1017.15
   linux-image-kvm                 5.15.0.1020.18
   linux-image-lowlatency          5.15.0.52.47
   linux-image-lowlatency-64k      5.15.0.52.47
   linux-image-lowlatency-64k-hwe-22.04  5.15.0.52.47
   linux-image-lowlatency-hwe-22.04  5.15.0.52.47
   linux-image-oracle              5.15.0.1021.18
   linux-image-raspi               5.15.0.1017.16
   linux-image-raspi-nolpae        5.15.0.1017.16
   linux-image-virtual             5.15.0.52.52
   linux-image-virtual-hwe-22.04   5.15.0.52.52

Ubuntu 20.04 LTS:
   linux-image-5.14.0-1054-oem     5.14.0-1054.61
   linux-image-5.15.0-1019-gke     5.15.0-1019.23~20.04.1
   linux-image-5.15.0-1021-gcp     5.15.0-1021.28~20.04.1
   linux-image-5.15.0-1022-aws     5.15.0-1022.26~20.04.1
   linux-image-5.15.0-1022-azure   5.15.0-1022.27~20.04.1
   linux-image-5.15.0-52-generic   5.15.0-52.58~20.04.1
   linux-image-5.15.0-52-generic-64k  5.15.0-52.58~20.04.1
   linux-image-5.15.0-52-generic-lpae  5.15.0-52.58~20.04.1
   linux-image-5.15.0-52-lowlatency  5.15.0-52.58~20.04.1
   linux-image-5.15.0-52-lowlatency-64k  5.15.0-52.58~20.04.1
   linux-image-aws                 5.15.0.1022.26~20.04.14
   linux-image-azure               5.15.0.1022.27~20.04.15
   linux-image-gcp                 5.15.0.1021.28~20.04.1
   linux-image-generic-64k-hwe-20.04  5.15.0.52.58~20.04.20
   linux-image-generic-hwe-20.04   5.15.0.52.58~20.04.20
   linux-image-generic-lpae-hwe-20.04  5.15.0.52.58~20.04.20
   linux-image-gke-5.15            5.15.0.1019.23~20.04.1
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.52.58~20.04.18
   linux-image-lowlatency-hwe-20.04  5.15.0.52.58~20.04.18
   linux-image-oem-20.04           5.14.0.1054.52
   linux-image-oem-20.04b          5.14.0.1054.52
   linux-image-oem-20.04c          5.14.0.1054.52
   linux-image-oem-20.04d          5.14.0.1054.52
   linux-image-virtual-hwe-20.04   5.15.0.52.58~20.04.20

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-5692-1
   CVE-2022-2602, CVE-2022-41674, CVE-2022-42719, CVE-2022-42720,
   CVE-2022-42721, CVE-2022-42722

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.15.0-52.58
   https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1022.26
   https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1022.27
   https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1021.28
   https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1019.23
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1007.10
   https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1017.20
   https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1020.24
   https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-52.58
   https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1021.27
   https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1017.19
   https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1022.26~20.04.1
   https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1022.27~20.04.1
   https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1021.28~20.04.1
   https://launchpad.net/ubuntu/+source/linux-gke-5.15/5.15.0-1019.23~20.04.1
   https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-52.58~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-52.58~20.04.1
   https://launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1054.61