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authorKees Cook <kees@ubuntu.com>2009-04-02 15:49:29 -0700
committerJames Morris <jmorris@namei.org>2009-04-03 11:47:11 +1100
commit3d43321b7015387cfebbe26436d0e9d299162ea1 (patch)
treebae6bd123c8f573e844a7af11c96eb5f6a73e0ee /security/commoncap.c
parent8a6f83afd0c5355db6d11394a798e94950306239 (diff)
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modules: sysctl to block module loading
Implement a sysctl file that disables module-loading system-wide since there is no longer a viable way to remove CAP_SYS_MODULE after the system bounding capability set was removed in 2.6.25. Value can only be set to "1", and is tested only if standard capability checks allow CAP_SYS_MODULE. Given existing /dev/mem protections, this should allow administrators a one-way method to block module loading after initial boot-time module loading has finished. Signed-off-by: Kees Cook <kees.cook@canonical.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
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