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(parent: 3454323) | patch
drivers: hv: Turn off write permission on the hypercall page
authorK. Y. Srinivasan <kys@microsoft.com>
Thu, 9 Feb 2017 01:30:56 +0000 (18:30 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 10 Feb 2017 14:48:00 +0000 (15:48 +0100)
commit372b1e91343e657a7cc5e2e2bcecd5140ac28119
tree80ff09da182077c0add44fc6bd75ac061039f67btree | snapshot
parent3454323c954775098871559b5c23d877c3e23f77commit | diff
drivers: hv: Turn off write permission on the hypercall page

The hypercall page only needs to be executable but currently it is setup to
be writable as well. Fix the issue.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Tested-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/hyperv/hv_init.c diff | blob | history
Domain: System / Kernel;