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Alerts This Week
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Ubuntu 16.04 ESM USN-6009-1 Critical: GCP Kernel Issues

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Calendar Grey April 11, 2023
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Keep your Ubuntu OS updated to fix multiple kernel vulnerabilities discovered in GCP, enhancing protection against possible local threats as well
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

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

Details:

It was discovered that the System V IPC implementation in the Linux kernel

did not properly handle large shared memory counts. A local attacker could

use this to cause a denial of service (memory exhaustion). (CVE-2021-3669)

It was discovered that a use-after-free vulnerability existed in the SGI

GRU driver in the Linux kernel. A local attacker could possibly use this to

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

code. (CVE-2022-3424)

Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux

kernel contained an out-of-bounds write vulnerability. A local attacker

could use this to cause a denial of service (system crash).

(CVE-2022-36280)

Hyunwoo Kim discovered that the DVB Core driver in the Linux kernel did not

properly perform reference counting in some si...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel system update

Update Instructions

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

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1147-gcp     4.15.0-1147.163~16.04.1
   linux-image-gcp                 4.15.0.1147.137
   linux-image-gke                 4.15.0.1147.137

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-6009-1

CVE-2021-3669, CVE-2022-3424, CVE-2022-36280, CVE-2022-41218,

CVE-2022-47929, CVE-2023-0045, CVE-2023-0266, CVE-2023-0394,

CVE-2023-23455, CVE-2023-23559, CVE-2023-28328

Severity
critical
Lowest
Low
Medium
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Critical

April 11, 2023

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel system update

Package Information

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