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Apple Mac OS X Kernel SearchFS Integer Overflow Vulnerability

Mac OS X kernel is reported prone to a local integer overflow vulnerability. The issue occurs in the searchfs() code.

The vulnerability exists due to an error in calculating size arguments derived from user-controlled integer values, which are then used in a user-land to kernel memory copy operation.

The issue may be leveraged to corrupt kernel memory and ultimately execute arbitrary code with ring-0 privileges. The issue may also be exploited to trigger a denial of service condition from a kernel panic.