Ubuntu Security Notices
USN-5418-1

USN-5418-1: Linux kernel vulnerabilities

Publication date

12 May 2022

Overview

Several security issues were fixed in the Linux kernel.

Releases

18.04 LTS 16.04 LTS 14.04 LTS

Packages

linux - Linux kernel
linux-aws - Linux kernel for Amazon Web Services (AWS) systems
linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
linux-azure - Linux kernel for Microsoft Azure Cloud systems
linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud systems
linux-dell300x - Linux kernel for Dell 300x platforms
linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
linux-hwe - Linux hardware enablement (HWE) kernel
linux-kvm - Linux kernel for cloud environments
linux-oracle - Linux kernel for Oracle Cloud systems
linux-snapdragon - Linux kernel for Qualcomm Snapdragon processors

Details

Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk,
Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre
Variant 2 mitigations for AMD processors on Linux were insufficient in some
situations. A local attacker could possibly use this to expose sensitive
information. (CVE-2021-26401)

Demi Marie Obenour and Simon Gaiser discovered that several Xen para-
virtualization device frontends did not properly restrict the access rights
of device backends. An attacker could possibly use a malicious Xen backend
to gain access to memory pages of a guest VM or cause a denial of service
in the guest. (CVE-2022-23036, CVE-2022-23037, CVE-2022-23038,
CVE-2022-23039, CVE-2022-23040,

It was discovered that the USB Gadget file system interface 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-2022-24958)

It was discovered that the USB gadget subsystem in the Linux kernel did not
properly validate interface descriptor requests. An attacker could possibly
use this to cause a denial of service (system crash). (CVE-2022-25258)

It was discovered that the Remote NDIS (RNDIS) USB gadget implementation in
the Linux kernel did not properly validate the size of the RNDIS_MSG_SET
command. An attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2022-25375)

It was discovered that the ST21NFCA NFC driver in the Linux kernel did not
properly validate the size of certain data in EVT_TRANSACTION events. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-26490)

It was discovered that the USB SR9700 ethernet device driver for the Linux
kernel did not properly validate the length of requests from the device. A
physically proximate attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2022-26966)

It was discovered that the Xilinx USB2 device gadget driver in the Linux
kernel did not properly validate endpoint indices from the host. A
physically proximate attacker could possibly use this to cause a denial of
service (system crash). (CVE-2022-27223)

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
18.04 bionic	linux-image-4.15.0-1127-snapdragon – 4.15.0-1127.136
	linux-image-virtual – 4.15.0.177.166
	linux-image-aws-lts-18.04 – 4.15.0.1128.131
	linux-image-generic – 4.15.0.177.166
	linux-image-4.15.0-1138-azure – 4.15.0-1138.151
	linux-image-oracle-lts-18.04 – 4.15.0.1093.103
	linux-image-4.15.0-1114-kvm – 4.15.0-1114.117
	linux-image-4.15.0-1128-aws – 4.15.0-1128.137
	linux-image-snapdragon – 4.15.0.1127.130
	linux-image-azure-lts-18.04 – 4.15.0.1138.111
	linux-image-4.15.0-177-generic-lpae – 4.15.0-177.186
	linux-image-4.15.0-1042-dell300x – 4.15.0-1042.47
	linux-image-dell300x – 4.15.0.1042.44
	linux-image-gcp-lts-18.04 – 4.15.0.1122.141
	linux-image-4.15.0-1122-gcp – 4.15.0-1122.136
	linux-image-4.15.0-1093-oracle – 4.15.0-1093.102
	linux-image-kvm – 4.15.0.1114.110
	linux-image-4.15.0-177-generic – 4.15.0-177.186
	linux-image-generic-lpae – 4.15.0.177.166
	linux-image-4.15.0-177-lowlatency – 4.15.0-177.186
	linux-image-lowlatency – 4.15.0.177.166
16.04 xenial	linux-image-4.15.0-1138-azure – 4.15.0-1138.151~16.04.1
	linux-image-lowlatency-hwe-16.04 – 4.15.0.177.169
	linux-image-oem – 4.15.0.177.169
	linux-image-azure – 4.15.0.1138.128
	linux-image-gke – 4.15.0.1122.123
	linux-image-gcp – 4.15.0.1122.123
	linux-image-aws-hwe – 4.15.0.1128.118
	linux-image-generic-hwe-16.04 – 4.15.0.177.169
	linux-image-oracle – 4.15.0.1093.81
	linux-image-4.15.0-1122-gcp – 4.15.0-1122.136~16.04.1
	linux-image-virtual-hwe-16.04 – 4.15.0.177.169
	linux-image-4.15.0-1093-oracle – 4.15.0-1093.102~16.04.1
	linux-image-4.15.0-177-generic – 4.15.0-177.186~16.04.1
	linux-image-4.15.0-1128-aws-hwe – 4.15.0-1128.137~16.04.1
	linux-image-4.15.0-177-lowlatency – 4.15.0-177.186~16.04.1
14.04 trusty	linux-image-4.15.0-1138-azure – 4.15.0-1138.151~14.04.1
14.04 trusty	linux-image-azure – 4.15.0.1138.110

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References

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