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Ubuntu 14.04 ESM USN-5513-1 High: Linux Kernel Race Conditions

ubuntu
Calendar Grey July 13, 2022
Dist Ubuntu Esm H88
Multiple critical security vulnerabilities affecting the Linux kernel on AWS platforms have been resolved. Significant issues investigated.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

Details:

Norbert Slusarek discovered a race condition in the CAN BCM networking

protocol of the Linux kernel leading to multiple use-after-free

vulnerabilities. A local attacker could use this issue to execute arbitrary

code. (CVE-2021-3609)

Likang Luo discovered that a race condition existed in the Bluetooth

subsystem of the Linux kernel, 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-2021-3752)

It was discovered that the NFC subsystem in the Linux kernel contained a

use-after-free vulnerability in its NFC Controller Interface (NCI)

implementation. A local attacker could possibly use this to cause a denial

of service (system crash) or execute arbitrary code. (CVE-2021-3760)

Szymon Heidrich discovered t...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service high linux kernel use after free aws

Update Instructions

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

Ubuntu 14.04 ESM:
  linux-image-4.4.0-1109-aws      4.4.0-1109.115
  linux-image-aws                 4.4.0.1109.106

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-5513-1

CVE-2021-3609, CVE-2021-3752, CVE-2021-3760, CVE-2021-39685,

CVE-2021-39714, CVE-2021-4197, CVE-2021-4202, CVE-2022-0330,

CVE-2022-1353, CVE-2022-1419, CVE-2022-1652, CVE-2022-1679,

CVE-2022-1734, CVE-2022-21123, CVE-2022-21125, CVE-2022-21166,

CVE-2022-24958, CVE-2022-28356, CVE-2022-28388

Severity
important
Lowest
Low
Medium
High
Critical

July 13, 2022

Topics%20covered

Topics Covered

security advisory denial of service high linux kernel use after free aws

Package Information

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