CVE-2020-26144
kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 11, 2021
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel, where the WiFi implementations accept plaintext A-MSDU frames as long as the first 8 bytes correspond to a valid RFC1042 (ex., LLC/SNAP) header for EAPOL. The highest threat from this vulnerability is to integrity.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options does not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-290 · Authentication Bypass by Spoofing