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Kernel Space: Linux Security Non-Modules and AppArmor

Jul 06, 2007, 18:00 (2 Talkback[s])
(Other stories by Jonathan Corbet)

"Long-time LWN readers will know that the Linux security module (LSM) API is controversial at best. To many, it has failed in its purpose, which is enabling the development of competing approaches to hardened Linux system; the only significant in-tree security module remains SELinux.

"Meanwhile, the LSM interface is easily abused; since it allows the insertion of hooks into almost any system operation of interest, it can be used by other modules to provide non-security functionality. The LSM symbols are mostly exported GPL-only, but it is still possible for binary-only modules to abuse the LSM operations--and, apparently, some have done so..."

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