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
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
OPENBSD:19970915 Vulnerability in I/O Signal Handling
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