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Ubuntu 16.04 ESM: USN-5919-1 Moderate Denial of Service Threats

ubuntu
Calendar Grey March 3, 2023
Dist Ubuntu Esm H88
Several kernel issues have been resolved on Ubuntu enhancing stability and security against service disruptions.
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-oracle: Linux kernel for Oracle Cloud systems

Details:

It was discovered that the Upper Level Protocol (ULP) subsystem in the

Linux kernel did not properly handle sockets entering the LISTEN state in

certain protocols, 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-2023-0461)

Kyle Zeng discovered that the sysctl implementation in the Linux kernel

contained a stack-based buffer overflow. A local attacker could use this to

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

(CVE-2022-4378)

It was discovered that a race condition existed in the Kernel Connection

Multiplexor (KCM) socket implementation in the Linux kernel when releasing

sockets in certain situations. A local at...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system updates kernel issues linux-aws-hwe linux-oracle

Update Instructions

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

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1115-oracle  4.15.0-1115.126~16.04.1
   linux-image-4.15.0-1151-aws     4.15.0-1151.164~16.04.1
   linux-image-aws-hwe             4.15.0.1151.134
   linux-image-oracle              4.15.0.1115.96

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-5919-1

CVE-2022-3521, CVE-2022-3545, CVE-2022-3628, CVE-2022-3640,

CVE-2022-3646, CVE-2022-3649, CVE-2022-42328, CVE-2022-42329,

CVE-2022-42895, CVE-2022-43750, CVE-2022-4378, CVE-2023-0461

March 03, 2023

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system updates kernel issues linux-aws-hwe linux-oracle

Package Information

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