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=========================================================================Ubuntu Security Notice USN-5413-1
May 12, 2022

linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

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-kvm: Linux kernel for cloud environments
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

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)

It was discovered that a race condition existed in the network scheduling
subsystem of 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-2021-39713)

It was discovered that the Parallel NFS (pNFS) implementation in the Linux
kernel did not properly perform bounds checking in some situations. An
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2021-4157)

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)

It was discovered that the EMS CAN/USB interface implementation in the
Linux kernel contained a double-free vulnerability when handling certain
error conditions. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2022-28390)

Update instructions:

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

Ubuntu 16.04 ESM:
  linux-image-4.4.0-1105-kvm      4.4.0-1105.114
  linux-image-4.4.0-1140-aws      4.4.0-1140.154
  linux-image-4.4.0-224-generic   4.4.0-224.257
  linux-image-4.4.0-224-lowlatency  4.4.0-224.257
  linux-image-aws                 4.4.0.1140.145
  linux-image-generic             4.4.0.224.231
  linux-image-kvm                 4.4.0.1105.103
  linux-image-lowlatency          4.4.0.224.231
  linux-image-virtual             4.4.0.224.231

Ubuntu 14.04 ESM:
  linux-image-4.4.0-224-generic   4.4.0-224.257~14.04.1
  linux-image-4.4.0-224-lowlatency  4.4.0-224.257~14.04.1
  linux-image-generic-lts-xenial  4.4.0.224.195
  linux-image-lowlatency-lts-xenial  4.4.0.224.195
  linux-image-virtual-lts-xenial  4.4.0.224.195

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-5413-1
  CVE-2020-27820, CVE-2021-39713, CVE-2021-4157, CVE-2022-26490,
  CVE-2022-27223, CVE-2022-28390

Ubuntu 5413-1: Linux kernel vulnerabilities

May 11, 2022
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 16.04 ESM: linux-image-4.4.0-1105-kvm 4.4.0-1105.114 linux-image-4.4.0-1140-aws 4.4.0-1140.154 linux-image-4.4.0-224-generic 4.4.0-224.257 linux-image-4.4.0-224-lowlatency 4.4.0-224.257 linux-image-aws 4.4.0.1140.145 linux-image-generic 4.4.0.224.231 linux-image-kvm 4.4.0.1105.103 linux-image-lowlatency 4.4.0.224.231 linux-image-virtual 4.4.0.224.231 Ubuntu 14.04 ESM: linux-image-4.4.0-224-generic 4.4.0-224.257~14.04.1 linux-image-4.4.0-224-lowlatency 4.4.0-224.257~14.04.1 linux-image-generic-lts-xenial 4.4.0.224.195 linux-image-lowlatency-lts-xenial 4.4.0.224.195 linux-image-virtual-lts-xenial 4.4.0.224.195 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-5413-1

CVE-2020-27820, CVE-2021-39713, CVE-2021-4157, CVE-2022-26490,

CVE-2022-27223, CVE-2022-28390

Severity
May 12, 2022

Package Information

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