CVE-2021-37409: 
Linux Debian vulnerability analysis and mitigation

CVE-2021-37409 is a security vulnerability affecting Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi products. The vulnerability was discovered and assigned on November 30, 2021, involving improper access control that could potentially allow privilege escalation through local access. The affected products include Killer™ Wi-Fi 6E AX1690, Killer™ Wi-Fi 6E AX1675, Killer™ Wi-Fi 6 AX1650, and Killer™ Wireless-AC 1550 running on Windows 10 & 11 systems (Intel Advisory, NVD).

The vulnerability stems from improper access control implementation in specific Intel wireless products. The issue requires local access and privileged user status to exploit. The vulnerability was documented as part of Intel Security Advisory INTEL-SA-00621 (Intel Advisory).

If successfully exploited, this vulnerability allows privileged users to escalate their privileges on affected systems through local access. This could potentially give attackers elevated system permissions, compromising system security (NVD).

Intel has released firmware updates to address this vulnerability. For Linux systems, the fix was implemented in firmware-nonfree package version 20220913-1. Debian systems received fixes through various updates, including DLA-3380-1 for Debian 10 (Buster) with version 20190114+really20220913-0+deb10u1 (Debian LTS).