CVE-2020-26141: 
Linux Kernel vulnerability analysis and mitigation

CVE-2020-26141 was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The vulnerability relates to the Wi-Fi implementation's failure to verify the Message Integrity Check (authenticity) of fragmented TKIP frames. This vulnerability was disclosed on May 11, 2021, as part of the broader FragAttacks research (FragAttacks, OSS Security).

The vulnerability exists in the Wi-Fi implementation where it fails to verify the Message Integrity Check (MIC) of fragmented TKIP frames. This is a security flaw that affects the authentication mechanism of fragmented frames in WPA or WPA2 networks that support the TKIP data-confidentiality protocol. The vulnerability has been assigned a CVSS v3.1 base score of 6.5 (MEDIUM) with vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N (NVD).

An adversary can exploit this vulnerability to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol. This could potentially lead to unauthorized access to sensitive information and compromise of network security (FragAttacks, GitHub Summary).

To address this vulnerability, affected vendors have released security updates during a 9-month coordinated disclosure period supervised by the Wi-Fi Alliance and ICASI. Users should apply available firmware and driver updates for their Wi-Fi devices. For devices without available updates, using HTTPS for sensitive communications can provide an additional layer of protection, though this does not fully mitigate the vulnerability (FragAttacks).