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Ubuntu 16.04 ESM USN-5684-1 Critical: Azure Kernel Flaws

ubuntu
Calendar Grey October 17, 2022
Dist Ubuntu Esm H88
Important security update USN-5684-1 for Ubuntu related to kernel vulnerabilities. Immediate updates required to ensure system protection.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

It was discovered that the SUNRPC RDMA protocol implementation in the Linux

kernel did not properly calculate the header size of a RPC message payload.

A local attacker could use this to expose sensitive information (kernel

memory). (CVE-2022-0812)

Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation

in the Linux kernel did not provide sufficient randomization when

calculating port offsets. An attacker could possibly use this to expose

sensitive information. (CVE-2022-1012, CVE-2022-32296)

Duoming Zhou discovered that race conditions existed in the timer handling

implementation of the Linux kernel's Rose X.25 protocol layer, resulting in

use-after-free vulnerabilities. A local attacker could use this to cause a

denial of service (system crash). (CVE-2022-2318)

Roger Pau Monné discove...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical threat system update kernel flaw ubuntu azure

Update Instructions

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

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1153-azure   4.15.0-1153.168~16.04.1
   linux-image-azure               4.15.0.1153.140

Ubuntu 14.04 ESM:
   linux-image-4.15.0-1153-azure   4.15.0-1153.168~14.04.1
   linux-image-azure               4.15.0.1153.122

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-5684-1

CVE-2022-0812, CVE-2022-1012, CVE-2022-2318, CVE-2022-26365,

CVE-2022-32296, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742,

CVE-2022-33744

Severity
critical
Lowest
Low
Medium
High
Critical

October 17, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical threat system update kernel flaw ubuntu azure

Package Information

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