CVE-2021-34693
Public on 2021-06-14
Modified on 2022-01-10
Description
The canbus filesystem in the Linux kernel contains an information leak of kernel memory to devices on the CAN bus network link layer. An attacker with the ability to dump messages on the CAN bus is able to learn of uninitialized stack values by dumbing messages on the can bus.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2022-01-20 | ALAS2KERNEL-5.10-2022-002 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-01-12 | ALAS2KERNEL-5.4-2022-004 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | CVSSv2 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
| NVD | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |