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Ubuntu 16.04 ESM: USN-5975-1 Moderate: Multiple Kernel Threats

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Calendar Grey March 27, 2023
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Several security issues resolved in the Linux kernel affecting Ubuntu 16.04 ESM, connected to denial-of-service risks across various updates.
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

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

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 an out-of-bounds write vulnerability existed in the

Video for Linux 2 (V4L2) implementation in the Linux kernel. A local

attacker could use this to cause a denial of servic...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu memory exhaustion cloud use after free

Update Instructions

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

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1146-gcp     4.15.0-1146.162~16.04.1
   linux-image-4.15.0-1162-azure   4.15.0-1162.177~16.04.1
   linux-image-azure               4.15.0.1162.146
   linux-image-gcp                 4.15.0.1146.136
   linux-image-gke                 4.15.0.1146.136

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-5975-1

CVE-2021-3669, CVE-2022-20369, CVE-2022-26373, CVE-2022-2663,

CVE-2022-29900, CVE-2022-29901, CVE-2022-3424, CVE-2022-3521,

CVE-2022-3545, CVE-2022-3628, CVE-2022-36280, CVE-2022-3640,

CVE-2022-3646, CVE-2022-3649, CVE-2022-39842, CVE-2022-41218,

CVE-2022-41849, CVE-2022-41850, CVE-2022-42328, CVE-2022-42329,

CVE-2022-42895, CVE-2022-43750, CVE-2022-47929, CVE-2023-0045,

CVE-2023-0266, CVE-2023-0394, CVE-2023-0461, CVE-2023-23455,

CVE-2023-23559, CVE-2023-26607, CVE-2023-28328

March 27, 2023

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu memory exhaustion cloud use after free

Package Information

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