CVE-2022-21821: 
CUDA Toolkit vulnerability analysis and mitigation

CVE-2022-21821 is an integer overflow vulnerability discovered in the NVIDIA CUDA Toolkit SDK, specifically affecting the cuobjdump utility. The vulnerability was disclosed on March 28, 2022, affecting all versions of CUDA Toolkit prior to version 11.6 Update 2 on both Windows and Linux operating systems (NVIDIA Bulletin).

The vulnerability is characterized as an integer overflow in the cuobjdump utility, which is shipped with CUDA Toolkit. It received a CVSS v3.1 base score of 7.8 (High) with the vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The vulnerability specifically exists in the standalone developer utility cuobjdump and does not affect normal runtime execution of CUDA (NVIDIA Bulletin).

If successfully exploited, this vulnerability can lead to remote code execution, causing complete denial of service and potentially impacting data confidentiality and integrity. However, it's important to note that the vulnerability only affects developer tools when run against specifically malformed binaries and does not impact normal CUDA runtime execution (NVIDIA Bulletin).

NVIDIA released CUDA Toolkit version 11.6 Update 2 to address this vulnerability. Users are recommended to upgrade to this version. While updating the CUDA driver simultaneously is recommended, it is not mandatory. Applications built with or distributed with the CUDA runtime components listed in Attachment A of the CUDA EULA are not affected by this vulnerability (NVIDIA Bulletin).

NVIDIA acknowledged and credited Leonardo Galli for reporting this security issue. The company has been proactive in providing detailed information about the vulnerability and its mitigation through their security bulletin (NVIDIA Bulletin).