CVE-2022-21499
Public on 2022-06-09
Modified on 2025-09-22
Description
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | No Fix Planned | ||
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2022-07-15 | ALAS2KERNEL-5.10-2022-015 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-07-15 | ALAS2KERNEL-5.4-2022-028 | Fixed |
| Amazon Linux 2023 | kernel | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 6.4 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L |
| NVD | CVSSv2 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
| NVD | CVSSv3 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |