=========================================================================Ubuntu Security Notice USN-6080-1
May 16, 2023

linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15,
linux-azure-fde, linux-azure-fde-5.15, linux-hwe-5.15, linux-ibm,
linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle
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-azure-fde: Linux kernel for Microsoft Azure CVM cloud 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-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-lowlatency-hwe-5.15: Linux low latency kernel

Details:

It was discovered that some AMD x86-64 processors with SMT enabled could
speculatively execute instructions using a return address from a sibling
thread. A local attacker could possibly use this to expose sensitive
information. (CVE-2022-27672)

Zheng Wang discovered that the Intel i915 graphics driver in the Linux
kernel did not properly handle certain error conditions, leading to a
double-free. A local attacker could possibly use this to cause a denial of
service (system crash). (CVE-2022-3707)

Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did
not properly implement speculative execution barriers in usercopy functions
in certain situations. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2023-0459)

It was discovered that the TLS subsystem 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) or possibly expose
sensitive information. (CVE-2023-1075)

It was discovered that the Reliable Datagram Sockets (RDS) protocol
implementation in the Linux kernel contained a type confusion vulnerability
in some situations. An attacker could use this to cause a denial of service
(system crash). (CVE-2023-1078)

Xingyuan Mo discovered that the x86 KVM implementation in the Linux kernel
did not properly initialize some data structures. A local attacker could
use this to expose sensitive information (kernel memory). (CVE-2023-1513)

It was discovered that the Android Binder IPC subsystem in the Linux kernel
did not properly validate inputs in some situations, 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-2023-20938)

It was discovered that a use-after-free vulnerability existed in the iSCSI
TCP implementation in the Linux kernel. A local attacker could possibly use
this to cause a denial of service (system crash). (CVE-2023-2162)

It was discovered that the NET/ROM protocol implementation in the Linux
kernel contained a race condition in some situations, 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-2023-32269)

Duoming Zhou discovered that a race condition existed in the infrared
receiver/transceiver driver in the Linux kernel, leading to a use-after-free vulnerability. A privileged attacker could use this to cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2023-1118)

Update instructions:

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1030-ibm     5.15.0-1030.33
   linux-image-5.15.0-1033-kvm     5.15.0-1033.38
   linux-image-5.15.0-1035-oracle  5.15.0-1035.41
   linux-image-5.15.0-1036-aws     5.15.0-1036.40
   linux-image-5.15.0-1038-azure   5.15.0-1038.45
   linux-image-5.15.0-1038-azure-fde  5.15.0-1038.45.1
   linux-image-5.15.0-72-generic   5.15.0-72.79
   linux-image-5.15.0-72-generic-64k  5.15.0-72.79
   linux-image-5.15.0-72-generic-lpae  5.15.0-72.79
   linux-image-5.15.0-72-lowlatency  5.15.0-72.79
   linux-image-5.15.0-72-lowlatency-64k  5.15.0-72.79
   linux-image-aws-lts-22.04       5.15.0.1036.35
   linux-image-azure               5.15.0.1038.34
   linux-image-azure-fde           5.15.0.1038.45.15
   linux-image-azure-lts-22.04     5.15.0.1038.34
   linux-image-generic             5.15.0.72.70
   linux-image-generic-64k         5.15.0.72.70
   linux-image-generic-lpae        5.15.0.72.70
   linux-image-ibm                 5.15.0.1030.26
   linux-image-kvm                 5.15.0.1033.29
   linux-image-lowlatency          5.15.0.72.77
   linux-image-lowlatency-64k      5.15.0.72.77
   linux-image-oracle              5.15.0.1035.30
   linux-image-virtual             5.15.0.72.70

Ubuntu 20.04 LTS:
   linux-image-5.15.0-1036-aws     5.15.0-1036.40~20.04.1
   linux-image-5.15.0-1038-azure   5.15.0-1038.45~20.04.1
   linux-image-5.15.0-1038-azure-fde  5.15.0-1038.45~20.04.1.1
   linux-image-5.15.0-72-generic   5.15.0-72.79~20.04.1
   linux-image-5.15.0-72-generic-64k  5.15.0-72.79~20.04.1
   linux-image-5.15.0-72-generic-lpae  5.15.0-72.79~20.04.1
   linux-image-5.15.0-72-lowlatency  5.15.0-72.79~20.04.1
   linux-image-5.15.0-72-lowlatency-64k  5.15.0-72.79~20.04.1
   linux-image-aws                 5.15.0.1036.40~20.04.25
   linux-image-azure               5.15.0.1038.45~20.04.28
   linux-image-azure-cvm           5.15.0.1038.45~20.04.28
   linux-image-azure-fde           5.15.0.1038.45~20.04.1.17
   linux-image-generic-64k-hwe-20.04  5.15.0.72.79~20.04.33
   linux-image-generic-hwe-20.04   5.15.0.72.79~20.04.33
   linux-image-generic-lpae-hwe-20.04  5.15.0.72.79~20.04.33
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.72.79~20.04.30
   linux-image-lowlatency-hwe-20.04  5.15.0.72.79~20.04.30
   linux-image-oem-20.04           5.15.0.72.79~20.04.33
   linux-image-oem-20.04b          5.15.0.72.79~20.04.33
   linux-image-oem-20.04c          5.15.0.72.79~20.04.33
   linux-image-oem-20.04d          5.15.0.72.79~20.04.33
   linux-image-virtual-hwe-20.04   5.15.0.72.79~20.04.33

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-6080-1
   CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075,
   CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-20938,
   CVE-2023-2162, CVE-2023-32269

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.15.0-72.79
   https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1036.40
   https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1038.45
   https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1038.45.1
   https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1030.33
   https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1033.38
   https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-72.79
   https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1035.41
   https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1036.40~20.04.1
   https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1038.45~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1038.45~20.04.1.1
   https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-72.79~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-72.79~20.04.1

Ubuntu 6080-1: Linux kernel vulnerabilities

May 16, 2023
Several security issues were fixed in the Linux kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1030-ibm 5.15.0-1030.33 linux-image-5.15.0-1033-kvm 5.15.0-1033.38 linux-image-5.15.0-1035-oracle 5.15.0-1035.41 linux-image-5.15.0-1036-aws 5.15.0-1036.40 linux-image-5.15.0-1038-azure 5.15.0-1038.45 linux-image-5.15.0-1038-azure-fde 5.15.0-1038.45.1 linux-image-5.15.0-72-generic 5.15.0-72.79 linux-image-5.15.0-72-generic-64k 5.15.0-72.79 linux-image-5.15.0-72-generic-lpae 5.15.0-72.79 linux-image-5.15.0-72-lowlatency 5.15.0-72.79 linux-image-5.15.0-72-lowlatency-64k 5.15.0-72.79 linux-image-aws-lts-22.04 5.15.0.1036.35 linux-image-azure 5.15.0.1038.34 linux-image-azure-fde 5.15.0.1038.45.15 linux-image-azure-lts-22.04 5.15.0.1038.34 linux-image-generic 5.15.0.72.70 linux-image-generic-64k 5.15.0.72.70 linux-image-generic-lpae 5.15.0.72.70 linux-image-ibm 5.15.0.1030.26 linux-image-kvm 5.15.0.1033.29 linux-image-lowlatency 5.15.0.72.77 linux-image-lowlatency-64k 5.15.0.72.77 linux-image-oracle 5.15.0.1035.30 linux-image-virtual 5.15.0.72.70 Ubuntu 20.04 LTS: linux-image-5.15.0-1036-aws 5.15.0-1036.40~20.04.1 linux-image-5.15.0-1038-azure 5.15.0-1038.45~20.04.1 linux-image-5.15.0-1038-azure-fde 5.15.0-1038.45~20.04.1.1 linux-image-5.15.0-72-generic 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-generic-64k 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-generic-lpae 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-lowlatency 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-lowlatency-64k 5.15.0-72.79~20.04.1 linux-image-aws 5.15.0.1036.40~20.04.25 linux-image-azure 5.15.0.1038.45~20.04.28 linux-image-azure-cvm 5.15.0.1038.45~20.04.28 linux-image-azure-fde 5.15.0.1038.45~20.04.1.17 linux-image-generic-64k-hwe-20.04 5.15.0.72.79~20.04.33 linux-image-generic-hwe-20.04 5.15.0.72.79~20.04.33 linux-image-generic-lpae-hwe-20.04 5.15.0.72.79~20.04.33 linux-image-lowlatency-64k-hwe-20.04 5.15.0.72.79~20.04.30 linux-image-lowlatency-hwe-20.04 5.15.0.72.79~20.04.30 linux-image-oem-20.04 5.15.0.72.79~20.04.33 linux-image-oem-20.04b 5.15.0.72.79~20.04.33 linux-image-oem-20.04c 5.15.0.72.79~20.04.33 linux-image-oem-20.04d 5.15.0.72.79~20.04.33 linux-image-virtual-hwe-20.04 5.15.0.72.79~20.04.33 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-6080-1

CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075,

CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-20938,

CVE-2023-2162, CVE-2023-32269

Severity
May 16, 2023

Package Information

https://launchpad.net/ubuntu/+source/linux/5.15.0-72.79 https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1036.40 https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1038.45 https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1038.45.1 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1030.33 https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1033.38 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-72.79 https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1035.41 https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1036.40~20.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1038.45~20.04.1 https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1038.45~20.04.1.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-72.79~20.04.1 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-72.79~20.04.1

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