Messages in this thread | | | Date | Wed, 12 Apr 2017 11:54:22 -0700 | From | Kees Cook <> | Subject | [GIT PULL] devmem fix for v4.11-rc7 |
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Hi,
Please pull this devmem change for v4.11-rc7. Tommi tested this successfully and no one appears to have objected to the RFC patch, so here's the fix. :)
Thanks!
-Kees
The following changes since commit b9b3322f13f350587f17f0a76f008830e3a420d3:
Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit (2017-04-12 00:02:33 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/devmem-v4.11-rc7
for you to fetch changes up to a4866aa812518ed1a37d8ea0c881dc946409de94:
mm: Tighten x86 /dev/mem with zeroing reads (2017-04-12 11:40:23 -0700)
---------------------------------------------------------------- Fixes /dev/mem to read back zeros for System RAM areas in the 1MB exception area on x86 to avoid exposing RAM or tripping hardened usercopy.
---------------------------------------------------------------- Kees Cook (1): mm: Tighten x86 /dev/mem with zeroing reads
arch/x86/mm/init.c | 41 +++++++++++++++++++-------- drivers/char/mem.c | 82 ++++++++++++++++++++++++++++++++++-------------------- 2 files changed, 82 insertions(+), 41 deletions(-)
-- Kees Cook Pixel Security
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