Select your cookie preferences

We use cookies and similar tools to enhance your experience, provide our services, deliver relevant advertising, and make improvements. Approved third parties also use these tools to help us deliver advertising and provide certain site features.

CVE-2021-38300

Public on 2021-09-20
Modified on 2021-11-04
Description

A flaw was found in the Linux kernel. The cBPF JIT compiler may produce machine code with incorrect branches. This flaw allows an unprivileged user to craft anomalous machine code, where the control flow is hijacked to execute arbitrary kernel code. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Severity
Important
See what this means
CVSS v3 Base Score
8.1
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core kernel 2021-10-28 23:22 ALAS2-2021-1719
Amazon Linux 2 - Microvm-kernel-4.14 Extra microvm-kernel 2023-09-14 04:27 ALAS2MICROVM-KERNEL-4.14-2023-001

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 8.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD CVSSv2 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C
NVD CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2021-38300 Mitre: CVE-2021-38300 FAQs regarding Amazon Linux ALAS/CVE Severity