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Ubuntu 16.04 ESM USN-5500-1 Critical: Kernel Security Issues Resolved

ubuntu
Calendar Grey July 1, 2022
Dist Ubuntu Esm H88
Numerous security patches for the Linux kernel on Ubuntu 16.04 ESM have been addressed, tackling issues related to denial of service and potential information disclosures.
Several security issues were fixed in the Linux kernel.

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

Details:

Eric Biederman discovered that the cgroup process migration implementation

in the Linux kernel did not perform permission checks correctly in some

situations. A local attacker could possibly use this to gain administrative

privileges. (CVE-2021-4197)

Lin Ma discovered that the NFC Controller Interface (NCI) implementation in

the Linux kernel contained a race condition, 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-2021-4202)

It was discovered that the PF_KEYv2 implementation in the Linux kernel did

not properly initialize kernel memory in some situations. A local attacker

could use this to expose sensitive information (kernel memory).

(CVE-2022-1353)

It was discovered th...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel ubuntu administrative privileges addressing issues

Update Instructions

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

Ubuntu 16.04 ESM:
  linux-image-4.4.0-1145-aws      4.4.0-1145.160
  linux-image-4.4.0-229-generic   4.4.0-229.263
  linux-image-4.4.0-229-lowlatency  4.4.0-229.263
  linux-image-aws                 4.4.0.1145.149
  linux-image-generic             4.4.0.229.235
  linux-image-lowlatency          4.4.0.229.235
  linux-image-virtual             4.4.0.229.235

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-5500-1

CVE-2021-4197, CVE-2021-4202, CVE-2022-1353, CVE-2022-1419,

CVE-2022-1652, CVE-2022-1679, CVE-2022-1734, CVE-2022-28356

Severity
critical
Lowest
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Critical

July 01, 2022

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel ubuntu administrative privileges addressing issues

Package Information

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