USN-6386-3: Linux kernel vulnerabilities
First published: Tue Oct 03 2023(Updated: )
Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. (CVE-2023-20588) It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, 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-2023-40283) It was discovered that some network classifier implementations in the Linux kernel contained use-after-free vulnerabilities. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4128) Lonial Con discovered that the netfilter subsystem in the Linux kernel contained a memory leak when handling certain element flush operations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-4569)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-5.15.0-1040-intel-iotg | <5.15.0-1040.46 | 5.15.0-1040.46 |
| Ubuntu Ubuntu | =22.04 | |
| All of | ||
| ubuntu/linux-image-5.15.0-1044-oracle | <5.15.0-1044.50 | 5.15.0-1044.50 |
| Ubuntu Ubuntu | =22.04 | |
| All of | ||
| ubuntu/linux-image-intel-iotg | <5.15.0.1040.40 | 5.15.0.1040.40 |
| Ubuntu Ubuntu | =22.04 | |
| All of | ||
| ubuntu/linux-image-oracle | <5.15.0.1044.39 | 5.15.0.1044.39 |
| Ubuntu Ubuntu | =22.04 | |
| All of | ||
| ubuntu/linux-image-oracle-lts-22.04 | <5.15.0.1044.39 | 5.15.0.1044.39 |
| Ubuntu Ubuntu | =22.04 | |
| All of | ||
| ubuntu/linux-image-5.15.0-1040-intel-iotg | <5.15.0-1040.46~20.04.1 | 5.15.0-1040.46~20.04.1 |
| Ubuntu Ubuntu | =20.04 | |
| All of | ||
| ubuntu/linux-image-5.15.0-1044-oracle | <5.15.0-1044.50~20.04.1 | 5.15.0-1044.50~20.04.1 |
| Ubuntu Ubuntu | =20.04 | |
| All of | ||
| ubuntu/linux-image-intel | <5.15.0.1040.46~20.04.31 | 5.15.0.1040.46~20.04.31 |
| Ubuntu Ubuntu | =20.04 | |
| All of | ||
| ubuntu/linux-image-intel-iotg | <5.15.0.1040.46~20.04.31 | 5.15.0.1040.46~20.04.31 |
| Ubuntu Ubuntu | =20.04 | |
| All of | ||
| ubuntu/linux-image-oracle | <5.15.0.1044.50~20.04.1 | 5.15.0.1044.50~20.04.1 |
| Ubuntu Ubuntu | =20.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2023-4128
- https://ubuntu.com/security/CVE-2023-20588
- https://ubuntu.com/security/CVE-2023-4569
- https://ubuntu.com/security/CVE-2023-40283
- https://ubuntu.com/security/notices/USN-6343-1
- https://ubuntu.com/security/notices/USN-6383-1
- https://ubuntu.com/security/notices/USN-6385-1
- https://ubuntu.com/security/notices/USN-6386-1
- https://ubuntu.com/security/notices/USN-6387-1
- https://ubuntu.com/security/notices/USN-6388-1
- https://ubuntu.com/security/notices/USN-6396-1
- https://ubuntu.com/security/notices/USN-6387-2
- https://ubuntu.com/security/notices/USN-6386-2
- https://ubuntu.com/security/notices/USN-6396-2
- https://ubuntu.com/security/notices/LSN-0098-1
- https://ubuntu.com/security/notices/USN-6396-3
- https://ubuntu.com/security/notices/USN-6466-1
- https://ubuntu.com/security/notices/USN-6384-1
- https://ubuntu.com/security/notices/USN-6577-1
- https://ubuntu.com/security/notices/USN-6602-1
- https://ubuntu.com/security/notices/USN-6604-1
- https://ubuntu.com/security/notices/USN-6604-2
- https://ubuntu.com/security/notices/LSN-0102-1
- https://ubuntu.com/security/notices/LSN-0103-1
- https://ubuntu.com/security/notices/LSN-0099-1
- https://launchpad.net/ubuntu/+source/linux-signed-intel-iotg/5.15.0-1040.46
- https://launchpad.net/ubuntu/+source/linux-signed-oracle/5.15.0-1044.50
- https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg/5.15.0.1040.40
- https://launchpad.net/ubuntu/+source/linux-meta-oracle/5.15.0.1044.39
- https://launchpad.net/ubuntu/+source/linux-signed-intel-iotg-5.15/5.15.0-1040.46~20.04.1
- https://launchpad.net/ubuntu/+source/linux-signed-oracle-5.15/5.15.0-1044.50~20.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg-5.15/5.15.0.1040.46~20.04.31
- https://launchpad.net/ubuntu/+source/linux-meta-oracle-5.15/5.15.0.1044.50~20.04.1
- https://ubuntu.com/security/notices/USN-6386-3 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the severity of USN-6386-3?
The severity of USN-6386-3 is moderate.
How can a local attacker exploit CVE-2023-20588?
A local attacker can exploit CVE-2023-20588 to expose sensitive information by leaking stale data from division operations on certain AMD processors.
What software versions are affected by USN-6386-3?
The affected software versions include linux-image-5.15.0-1040-intel-iotg, linux-image-5.15.0-1044-oracle, linux-image-intel-iotg, linux-image-oracle, linux-image-oracle-lts-22.04, linux-image-5.15.0-1040-intel-iotg (Ubuntu 20.04), linux-image-5.15.0-1044-oracle (Ubuntu 20.04), linux-image-intel (Ubuntu 20.04), linux-image-intel-iotg (Ubuntu 20.04), linux-image-oracle (Ubuntu 20.04).
How can I fix USN-6386-3?
To fix USN-6386-3, update your Ubuntu system to the recommended versions of the affected software packages.
Where can I find more information about the vulnerabilities associated with USN-6386-3?
You can find more information about the vulnerabilities associated with USN-6386-3 on the Ubuntu security website.
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