Four security flaws have been found and publicly reported by security firm Immunity. The flaws were all found in Darwin, the open source kernel for Mac OS X, and involve memory-related issues, including a "text book case" of a stack overflofindings. "
The vulnerabilities
* searchfs() Mac OS X specific system call
* semop() system call kernel stack overflow
* Several inherited kernel overflows from older BSD systems
* Is a simple logic bug in the setuid binary /usr/bin/at.
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