CVE-2020-10768
Public on 2020-07-14
Modified on 2020-07-21
Description
A flaw was found in the prctl() function, where it can be used to enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being 'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this vulnerability is to confidentiality.
Severity
Important
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | 2020-07-14 | ALAS-2020-1401 | Fixed |
| Amazon Linux 2 - Core | kernel | 2020-07-21 | ALAS2-2020-1465 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-01-20 | ALAS2KERNEL-5.4-2022-013 | Fixed |
| Amazon Linux 2 - Livepatch Extra | kernel-livepatch-4.14.181-142.260 | 2020-09-04 | ALAS2LIVEPATCH-2020-025 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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 |
| NVD | CVSSv2 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |