CVE-1999-1214: The asynchronous I/O facility in 4.4 BSD kernel does not check user credentials when setting the recipient of I/O notifi

Published n/a Updated 2026-08-21T04:30:39.280Z

Summary

The asynchronous I/O facility in 4.4 BSD kernel does not check user credentials when setting the recipient of I/O notification, which allows local users to cause a denial of service by using certain ioctl and fcntl calls to cause the signal to be sent to an arbitrary process ID.

Severity

UNKNOWN

Source Attribution

Source: NVD · Updated: 2026-08-21T04:30:39.280Z · Confidence: high

Impact

Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.

Affected Software

Fix

Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.

References