USN-4592-1: Linux kernel vulnerabilities
First published: Tue Oct 20 2020(Updated: )
Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux kernel contained a type-confusion error. A physically proximate remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-12351) Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux kernel did not properly initialize memory in some situations. A physically proximate remote attacker could use this to expose sensitive information (kernel memory). (CVE-2020-12352) Andy Nguyen discovered that the Bluetooth HCI event packet parser in the Linux kernel did not properly handle event advertisements of certain sizes, leading to a heap-based buffer overflow. A physically proximate remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-24490)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-5.0.0-1070-oem-osp1 | <5.0.0-1070.76 | 5.0.0-1070.76 |
| Ubuntu | =18.04 | |
| All of | ||
| ubuntu/linux-image-5.3.0-1036-raspi2 | <5.3.0-1036.38 | 5.3.0-1036.38 |
| Ubuntu | =18.04 | |
| All of | ||
| ubuntu/linux-image-oem-osp1 | <5.0.0.1070.68 | 5.0.0.1070.68 |
| Ubuntu | =18.04 | |
| All of | ||
| ubuntu/linux-image-raspi2-hwe-18.04 | <5.3.0.1036.25 | 5.3.0.1036.25 |
| Ubuntu | =18.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2020-12351
- https://ubuntu.com/security/CVE-2020-24490
- https://ubuntu.com/security/CVE-2020-12352
- https://ubuntu.com/security/notices/USN-4591-1
- https://ubuntu.com/security/notices/LSN-0073-1
- https://ubuntu.com/security/notices/USN-7179-1
- https://ubuntu.com/security/notices/USN-7183-1
- https://ubuntu.com/security/notices/USN-7179-2
- https://ubuntu.com/security/notices/USN-7179-3
- https://ubuntu.com/security/notices/USN-7186-1
- https://ubuntu.com/security/notices/USN-7186-2
- https://ubuntu.com/security/notices/USN-7194-1
- https://ubuntu.com/security/notices/USN-7179-4
- https://ubuntu.com/security/notices/USN-4752-1
- https://ubuntu.com/security/notices/USN-4657-1
- https://ubuntu.com/security/notices/LSN-0074-1
- https://launchpad.net/ubuntu/+source/linux-signed-oem-osp1/5.0.0-1070.76
- https://launchpad.net/ubuntu/+source/linux-raspi2-5.3/5.3.0-1036.38
- https://launchpad.net/ubuntu/+source/linux-meta-oem-osp1/5.0.0.1070.68
- https://launchpad.net/ubuntu/+source/linux-meta-raspi2-5.3/5.3.0.1036.25
- https://ubuntu.com/security/notices/USN-4592-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2020-12351?
The severity of CVE-2020-12351 is high.
How can a physically proximate remote attacker exploit CVE-2020-12351?
A physically proximate remote attacker can exploit CVE-2020-12351 to cause a denial of service (system crash) or possibly execute arbitrary code.
How can I fix CVE-2020-12351?
To fix CVE-2020-12351, update the affected Linux kernel to version 5.0.0-1070.76 or later.
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