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Alerts This Week
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Ubuntu 14.04 ESM: USN-5924-1 Critical Linux Kernel Azure Threats

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Calendar Grey March 6, 2023
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Numerous vulnerabilities in the Linux kernel threaten Ubuntu users. Apply updates to protect 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-azure: Linux kernel for Microsoft Azure 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)

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 service (system crash) or

possibly execute arbitrary code. (CVE-2022-203...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue critical ubuntu linux kernel linux-azure

Update Instructions

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

Ubuntu 14.04 ESM:
   linux-image-4.15.0-1162-azure   4.15.0-1162.177~14.04.1+1
   linux-image-azure               4.15.0.1162.128

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-5924-1

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

Severity
critical
Lowest
Low
Medium
High
Critical

March 06, 2023

Topics%20covered

Topics Covered

security advisory denial of service security issue critical ubuntu linux kernel linux-azure

Package Information

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