CVE-1999-1214

Summary

CVE-1999-1214 is a vulnerability affecting the asynchronous I/O facility in the 4.4 BSD kernel. This issue permits local users to cause a denial of service by manipulating certain ioctl and fcntl calls. The vulnerability arises due to the lack of user credential checks when setting the recipient of I/O notifications. As a result, an attacker can maliciously cause signals to be sent to arbitrary process IDs, leading to system instability and potential downtime. This vulnerability poses a significant risk, particularly in environments with multiple users or processes, and should be addressed through appropriate patching or configuration changes.

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