Ksplice -- safe enough?

Last week, Ksplice, an automatic system for rebootless Linux kernel security updates gained some attention. The idea of using hotpatching techniques for applying sucurity fixes to the kernel in order to save reboots is not quite new. Not only does Windows support hotpatching as of Windows Server 2003 SP1, there also have have been attempts to introduce a hot updating infrastructure to the Linux kernel before. Anyway, the paper is an instresting read. Continue »