[Vulnerability description]
A NULL pointer dereference in the function handle_viminfo_register() of vim v9.0 allows attackers to cause a Denial of Service (DoS) via crafted file.

[VulnerabilityType Other]
null pointer deference

[Vendor of Product]
vim

[Affected Product Code Base]
vim - 9.0

[Reference]
https://github.com/vim/vim/issues/12652

[CVE Reference]
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2023-45921 to this vulnerability.