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(parent: f60673f) | patch
Restrict /dev/mem and /dev/kmem when securelevel is set.
authorMatthew Garrett <mjg59@srcf.ucam.org>
Fri, 9 Mar 2012 14:28:15 +0000 (09:28 -0500)
committerSalvatore Bonaccorso <carnil@debian.org>
Fri, 2 Dec 2016 05:35:22 +0000 (05:35 +0000)
commitd7cbb8b1dcc534b8453d7726293a1283434ac17c
treea2ef6681bef966a11958b371000f2170b757deectree | snapshot
parentf60673f78d8bf0473359995029313c47a8326c12commit | diff
Restrict /dev/mem and /dev/kmem when securelevel is set.

Allowing users to write to address space provides mechanisms that may permit
modification of the kernel at runtime. Prevent this if securelevel has been
set.

Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Gbp-Pq: Topic features/all/securelevel
Gbp-Pq: Name restrict-dev-mem-and-dev-kmem-when-securelevel-is-se.patch
drivers/char/mem.c diff | blob | history
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