==========================================================================
Ubuntu Security Notice USN-6027-1
April 19, 2023

linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, 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-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:

It was discovered that the Traffic-Control Index (TCINDEX) 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-2023-1281)

Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon
GPU devices did not properly validate memory allocation in certain
situations, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-3108)

It was discovered that the infrared transceiver USB driver did not properly
handle USB control messages. A local attacker with physical access could
plug in a specially crafted USB device to cause a denial of service (memory
exhaustion). (CVE-2022-3903)

Haowei Yan discovered that a race condition existed in the Layer 2
Tunneling Protocol (L2TP) implementation in the Linux kernel. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2022-4129)

It was discovered that the Human Interface Device (HID) support driver in
the Linux kernel contained a type confusion vulnerability in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2023-1073)

It was discovered that a memory leak existed in the SCTP protocol
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2023-1074)

Lianhui Tang discovered that the MPLS implementation in the Linux kernel
did not properly handle certain sysctl allocation failure conditions,
leading to a double-free vulnerability. An attacker could use this to cause
a denial of service or possibly execute arbitrary code. (CVE-2023-26545)

Update instructions:

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1047-ibm      5.4.0-1047.52
   linux-image-5.4.0-1067-gkeop    5.4.0-1067.71
   linux-image-5.4.0-1083-raspi    5.4.0-1083.94
   linux-image-5.4.0-1089-kvm      5.4.0-1089.95
   linux-image-5.4.0-1097-gke      5.4.0-1097.104
   linux-image-5.4.0-1099-oracle   5.4.0-1099.108
   linux-image-5.4.0-1100-aws      5.4.0-1100.108
   linux-image-5.4.0-1103-gcp      5.4.0-1103.112
   linux-image-5.4.0-1106-azure    5.4.0-1106.112
   linux-image-5.4.0-147-generic   5.4.0-147.164
   linux-image-5.4.0-147-generic-lpae  5.4.0-147.164
   linux-image-5.4.0-147-lowlatency  5.4.0-147.164
   linux-image-aws-lts-20.04       5.4.0.1100.97
   linux-image-azure-lts-20.04     5.4.0.1106.99
   linux-image-gcp-lts-20.04       5.4.0.1103.105
   linux-image-generic             5.4.0.147.145
   linux-image-generic-lpae        5.4.0.147.145
   linux-image-gke                 5.4.0.1097.102
   linux-image-gke-5.4             5.4.0.1097.102
   linux-image-gkeop               5.4.0.1067.65
   linux-image-gkeop-5.4           5.4.0.1067.65
   linux-image-ibm                 5.4.0.1047.73
   linux-image-ibm-lts-20.04       5.4.0.1047.73
   linux-image-kvm                 5.4.0.1089.83
   linux-image-lowlatency          5.4.0.147.145
   linux-image-oem                 5.4.0.147.145
   linux-image-oem-osp1            5.4.0.147.145
   linux-image-oracle-lts-20.04    5.4.0.1099.92
   linux-image-raspi               5.4.0.1083.113
   linux-image-raspi2              5.4.0.1083.113
   linux-image-virtual             5.4.0.147.145

Ubuntu 18.04 LTS:
   linux-image-5.4.0-1047-ibm      5.4.0-1047.52~18.04.1
   linux-image-5.4.0-1083-raspi    5.4.0-1083.94~18.04.1
   linux-image-5.4.0-1099-oracle   5.4.0-1099.108~18.04.1
   linux-image-5.4.0-1100-aws      5.4.0-1100.108~18.04.1
   linux-image-5.4.0-1103-gcp      5.4.0-1103.112~18.04.1
   linux-image-5.4.0-1106-azure    5.4.0-1106.112~18.04.1
   linux-image-5.4.0-147-generic   5.4.0-147.164~18.04.1
   linux-image-5.4.0-147-generic-lpae  5.4.0-147.164~18.04.1
   linux-image-5.4.0-147-lowlatency  5.4.0-147.164~18.04.1
   linux-image-aws                 5.4.0.1100.78
   linux-image-azure               5.4.0.1106.79
   linux-image-gcp                 5.4.0.1103.79
   linux-image-generic-hwe-18.04   5.4.0.147.164~18.04.118
   linux-image-generic-lpae-hwe-18.04  5.4.0.147.164~18.04.118
   linux-image-ibm                 5.4.0.1047.58
   linux-image-lowlatency-hwe-18.04  5.4.0.147.164~18.04.118
   linux-image-oem                 5.4.0.147.164~18.04.118
   linux-image-oem-osp1            5.4.0.147.164~18.04.118
   linux-image-oracle              5.4.0.1099.108~18.04.71
   linux-image-raspi-hwe-18.04     5.4.0.1083.80
   linux-image-snapdragon-hwe-18.04  5.4.0.147.164~18.04.118
   linux-image-virtual-hwe-18.04   5.4.0.147.164~18.04.118

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-6027-1
   CVE-2022-3108, CVE-2022-3903, CVE-2022-4129, CVE-2023-1073,
   CVE-2023-1074, CVE-2023-1281, CVE-2023-26545

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.4.0-147.164
   https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1100.108
   https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1106.112
   https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1103.112
   https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1097.104
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1067.71
   https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1047.52
   https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1089.95
   https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1099.108
   https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1083.94
   https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1100.108~18.04.1
   https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1106.112~18.04.1
   https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1103.112~18.04.1
   https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-147.164~18.04.1
   https://launchpad.net/ubuntu/+source/linux-ibm-5.4/5.4.0-1047.52~18.04.1
   https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1099.108~18.04.1
   https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1083.94~18.04.1