CVE-2022-20036: 
NixOS vulnerability analysis and mitigation

CVE-2022-20036 is a medium severity vulnerability discovered in MediaTek's ion driver that was disclosed in February 2022. The vulnerability is characterized as an information disclosure issue due to an incorrect bounds check in the ion driver component. This security flaw affects various MediaTek chipsets including MT6735, MT6737, MT6739, and several other models used in smartphones and tablets running Android 10.0 and 11.0 operating systems (MediaTek Bulletin).

The vulnerability is classified as an Exposure of Sensitive Information to an Unauthorized Actor (CWE-200). The technical root cause stems from an incorrect bounds check implementation in the ion driver component. The vulnerability could lead to local information disclosure with no additional execution privileges needed for exploitation. User interaction is not required for successful exploitation of this vulnerability (MediaTek Bulletin).

If exploited, the vulnerability could result in unauthorized local information disclosure on affected devices. The attack requires local access to the device, but no additional execution privileges are needed to carry out the exploitation (MediaTek Bulletin).

MediaTek has addressed this vulnerability and notified device OEMs of the security patches at least two months before the public disclosure in February 2022. Users should ensure their devices are updated with the latest security patches provided by their device manufacturers (MediaTek Bulletin).