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x86/HVM: return all ones on wrong-sized reads of system device I/O ports
authorJan Beulich <jbeulich@suse.com>
Thu, 5 Mar 2015 12:34:54 +0000 (13:34 +0100)
committerJan Beulich <jbeulich@suse.com>
Thu, 5 Mar 2015 12:34:54 +0000 (13:34 +0100)
commitc9e57594e1ba5da9d705dee9f00aa4e7e925963d
treef0f7f2f4c987183a4105e65a6c96def9fa2b8eb3tree
parent1ac455458de37ebd1400525563587d1b41b1b34fcommit | diff
x86/HVM: return all ones on wrong-sized reads of system device I/O ports

So far the value presented to the guest remained uninitialized.

This is CVE-2015-2044 / XSA-121.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
xen/arch/x86/hvm/i8254.c diff | blob | blame | history
xen/arch/x86/hvm/pmtimer.c diff | blob | blame | history
xen/arch/x86/hvm/rtc.c diff | blob | blame | history
xen/arch/x86/hvm/vpic.c diff | blob | blame | history
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