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authorVenki Pallipadi <venkatesh.pallipadi@intel.com>2008-05-14 16:05:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-14 19:11:15 -0700
commit1c12c4cf9411eb130b245fa8d0fbbaf989477c7b (patch)
treef61d58e955b3159007ef77513c1c4f1ed2c9ec23 /init
parent44c81433e8b05dbc85985d939046f10f95901184 (diff)
mprotect: prevent alteration of the PAT bits
There is a defect in mprotect, which lets the user change the page cache type bits by-passing the kernel reserve_memtype and free_memtype wrappers. Fix the problem by not letting mprotect change the PAT bits. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions