CVE-2021-39667: 
NixOS vulnerability analysis and mitigation

CVE-2021-39667 affects Android versions 10, 11, and 12. The vulnerability exists in the ih264d_parse_decode_slice function of ih264d_parse_slice.c, where a possible out of bounds write can occur due to a heap buffer overflow. This vulnerability was disclosed in the March 2022 Android Security Bulletin (Android Bulletin).

The vulnerability is classified as a heap buffer overflow vulnerability in the ih264d_parse_decode_slice function. It has been assigned a CVSS v3.1 Base Score of 6.5 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. The vulnerability requires user interaction for exploitation and can be triggered remotely (NVD).

If successfully exploited, this vulnerability could lead to remote information disclosure with no additional execution privileges needed. The attack could potentially expose sensitive data to unauthorized parties (NVD).

The vulnerability requires user interaction for successful exploitation. No additional execution privileges are needed for an attacker to exploit this vulnerability. The attack can be initiated remotely, making it accessible to network-based attackers (NVD).

Google has released security patches for this vulnerability in the March 2022 Android Security Bulletin. Users should update their Android devices to the latest available security patch level to protect against this vulnerability (Android Bulletin).