CVE-2021-26401

Public on 2022-03-09
Modified on 2023-01-18
Description
AMD recommends using a software mitigation for this issue, which the kernel is enabling by default. The Linux kernel will use the generic retpoline software mitigation, instead of the specialized AMD one, on AMD instances (*5a*). This is done by default, and no administrator action is needed.
Severity
Important severity
Important
CVSS v3 Base Score
4.7
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 1 kernel 2022-03-07 ALAS-2022-1571 Fixed
Amazon Linux 2 - Core kernel 2022-03-07 ALAS2-2022-1761 Fixed
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-03-07 ALAS2KERNEL-5.10-2022-011 Fixed
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-03-07 ALAS2KERNEL-5.4-2022-023 Fixed
Amazon Linux 2023 kernel 2023-02-17 ALAS2023-2023-070 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.7 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD CVSSv2 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N
NVD CVSSv3 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N