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(parent: 066f6f7) | patch
x86: Restrict MSR access when the kernel is locked down
authorMatthew Garrett <matthew.garrett@nebula.com>
Wed, 5 Apr 2017 16:40:30 +0000 (17:40 +0100)
committerSalvatore Bonaccorso <carnil@debian.org>
Sun, 15 Oct 2017 06:57:36 +0000 (07:57 +0100)
commit4df5d51b34c80c28b6037ea0ce9434a4bc38433f
treeb2695de028824efb79a28dabf4550c14c83d496atree | snapshot
parent066f6f77895a0646ea0e32082a9e5a5797399f22commit | diff
x86: Restrict MSR access when the kernel is locked down

Writing to MSRs should not be allowed if the kernel is locked down, since
it could lead to execution of arbitrary code in kernel mode.  Based on a
patch by Kees Cook.

Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Gbp-Pq: Topic features/all/lockdown
Gbp-Pq: Name 0051-x86-Restrict-MSR-access-when-the-kernel-is-locked-do.patch
arch/x86/kernel/msr.c diff | blob | history
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