1. Ubuntu Security Notices
  2. USN-5415-1

USN-5415-1: Linux kernel vulnerabilities

Publication date

12 May 2022

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Jeremy Cline discovered a use-after-free in the nouveau graphics driver of
the Linux kernel during device removal. A privileged or physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2020-27820)

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)

David Bouman discovered that the netfilter subsystem in the Linux kernel
did not initialize memory in some situations. A local attacker could use
this to expose sensitive information (kernel memory). (CVE-2022-1016)

It was discovered that the MMC/SD subsystem...

Jeremy Cline discovered a use-after-free in the nouveau graphics driver of
the Linux kernel during device removal. A privileged or physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2020-27820)

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)

David Bouman discovered that the netfilter subsystem in the Linux kernel
did not initialize memory in some situations. A local attacker could use
this to expose sensitive information (kernel memory). (CVE-2022-1016)

It was discovered that the MMC/SD subsystem in the Linux kernel did not
properly handle read errors from SD cards in certain situations. An
attacker could possibly use this to expose sensitive information (kernel
memory). (CVE-2022-20008)

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 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
20.04 focal linux-image-5.4.0-1063-kvm –  5.4.0-1063.66
linux-image-5.4.0-1073-aws –  5.4.0-1073.78
linux-image-5.4.0-1060-raspi –  5.4.0-1060.68
linux-image-gkeop –  5.4.0.1040.43
linux-image-virtual –  5.4.0.110.114
linux-image-generic –  5.4.0.110.114
linux-image-5.4.0-110-generic –  5.4.0-110.124
linux-image-oem –  5.4.0.110.114
linux-image-5.4.0-1071-gke –  5.4.0-1071.76
linux-image-raspi –  5.4.0.1060.94
linux-image-5.4.0-1021-ibm –  5.4.0-1021.23
linux-image-ibm –  5.4.0.1021.21
linux-image-oem-osp1 –  5.4.0.110.114
linux-image-5.4.0-110-lowlatency –  5.4.0-110.124
linux-image-5.4.0-1078-azure –  5.4.0-1078.81
linux-image-5.4.0-110-generic-lpae –  5.4.0-110.124
linux-image-azure-lts-20.04 –  5.4.0.1078.76
linux-image-gkeop-5.4 –  5.4.0.1040.43
linux-image-azure-fde –  5.4.0.1078.81+cvm1.22
linux-image-5.4.0-1040-gkeop –  5.4.0-1040.41
linux-image-5.4.0-1078-azure-fde –  5.4.0-1078.81+cvm1.1
linux-image-lowlatency –  5.4.0.110.114
linux-image-gcp-lts-20.04 –  5.4.0.1073.81
linux-image-ibm-lts-20.04 –  5.4.0.1021.21
linux-image-aws-lts-20.04 –  5.4.0.1073.75
linux-image-raspi2 –  5.4.0.1060.94
linux-image-gke –  5.4.0.1071.80
linux-image-5.4.0-1073-gcp –  5.4.0-1073.78
linux-image-oracle-lts-20.04 –  5.4.0.1071.71
linux-image-gke-5.4 –  5.4.0.1071.80
linux-image-kvm –  5.4.0.1063.62
linux-image-generic-lpae –  5.4.0.110.114
linux-image-5.4.0-1071-oracle –  5.4.0-1071.77
18.04 bionic linux-image-generic-hwe-18.04 –  5.4.0.110.124~18.04.95
linux-image-snapdragon-hwe-18.04 –  5.4.0.110.124~18.04.95
linux-image-5.4.0-110-generic –  5.4.0-110.124~18.04.1
linux-image-oem –  5.4.0.110.124~18.04.95
linux-image-raspi-hwe-18.04 –  5.4.0.1060.61
linux-image-5.4.0-1021-ibm –  5.4.0-1021.23~18.04.1
linux-image-ibm –  5.4.0.1021.38
linux-image-oem-osp1 –  5.4.0.110.124~18.04.95
linux-image-5.4.0-110-lowlatency –  5.4.0-110.124~18.04.1
linux-image-generic-lpae-hwe-18.04 –  5.4.0.110.124~18.04.95
linux-image-lowlatency-hwe-18.04 –  5.4.0.110.124~18.04.95
linux-image-5.4.0-110-generic-lpae –  5.4.0-110.124~18.04.1
linux-image-gkeop-5.4 –  5.4.0.1040.41~18.04.40
linux-image-5.4.0-1040-gkeop –  5.4.0-1040.41~18.04.1
linux-image-azure –  5.4.0.1078.57
linux-image-virtual-hwe-18.04 –  5.4.0.110.124~18.04.95
linux-image-5.4.0-1060-raspi –  5.4.0-1060.68~18.04.1
linux-image-gcp –  5.4.0.1073.57
linux-image-oracle –  5.4.0.1071.77~18.04.50
linux-image-5.4.0-1078-azure –  5.4.0-1078.81~18.04.1
linux-image-5.4.0-1073-gcp –  5.4.0-1073.78~18.04.1
linux-image-5.4.0-1071-oracle –  5.4.0-1071.77~18.04.1

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References

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