|Date: (C)2009-10-06 (M)2015-12-16|
|CVSS Score: 6.9||Access Vector: LOCAL|
|Exploitability Subscore: 3.4||Access Complexity: MEDIUM|
|Impact Subscore: 10.0||Authentication: NONE|
| ||Confidentiality: COMPLETE|
| ||Integrity: COMPLETE|
| ||Availability: COMPLETE|
Race condition in the Pipe (IPC) close function in FreeBSD 6.3 and 6.4 allows local users to cause a denial of service (crash) or gain privileges via vectors related to kqueues, which triggers a use after free, leading to a NULL pointer dereference or memory corruption.