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Ubuntu 16.04 ESM USN-5757-2 Critical: Kernel DoS Issues Resolved

ubuntu
Calendar Grey December 1, 2022
Dist Ubuntu Esm H88
Numerous Linux kernel vulnerabilities impacting Ubuntu 16.04 ESM resolved. Users urged to upgrade for protection against possible exploits.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-hwe: Linux hardware enablement (HWE) kernel

- linux-oracle: Linux kernel for Oracle Cloud systems

Details:

Jann Horn discovered that the Linux kernel did not properly track memory

allocations for anonymous VMA mappings in some situations, leading to

potential data structure reuse. A local attacker could use this to cause a

denial of service (system crash) or possibly execute arbitrary code.

(CVE-2022-42703)

It was discovered that the video4linux driver for Empia based TV cards in

the Linux kernel did not properly perform reference counting 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-2022-3239)

It was ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory DoS memory leak kernel system update use-after-free Ubuntu 16.04

Update Instructions

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

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1111-oracle  4.15.0-1111.122~16.04.2
   linux-image-4.15.0-1141-gcp     4.15.0-1141.157~16.04.2
   linux-image-4.15.0-1146-aws-hwe  4.15.0-1146.158~16.04.2
   linux-image-4.15.0-200-generic  4.15.0-200.211~16.04.2
   linux-image-4.15.0-200-lowlatency  4.15.0-200.211~16.04.2
   linux-image-aws-hwe             4.15.0.1146.131
   linux-image-gcp                 4.15.0.1141.133
   linux-image-generic-hwe-16.04   4.15.0.200.185
   linux-image-gke                 4.15.0.1141.133
   linux-image-lowlatency-hwe-16.04  4.15.0.200.185
   linux-image-oem                 4.15.0.200.185
   linux-image-oracle              4.15.0.1111.93
   linux-image-virtual-hwe-16.04   4.15.0.200.185

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-5757-2

https://ubuntu.com/security/notices/USN-5757-1

CVE-2022-3239, CVE-2022-3524, CVE-2022-3564, CVE-2022-3565,

CVE-2022-3566, CVE-2022-3567, CVE-2022-3594, CVE-2022-3621,

CVE-2022-42703

Severity
critical
Lowest
Low
Medium
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Critical

December 01, 2022

Topics%20covered

Topics Covered

security advisory DoS memory leak kernel system update use-after-free Ubuntu 16.04

Package Information

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