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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Irix | Sgi | * | * |
References
- http://www.openbsd.com/advisories/signals.txt
- http://www.openbsd.com/advisories/signals.txt
- http://www.osvdb.org/11062
- https://exchange.xforce.ibmcloud.com/vulnerabilities/556
- http://www.openbsd.com/advisories/signals.txt
- http://www.openbsd.com/advisories/signals.txt
- http://www.osvdb.org/11062
- https://exchange.xforce.ibmcloud.com/vulnerabilities/556