* gnu/packages/patches/qemu-CVE-2017-15038.patch, gnu/packages/patches/qemu-CVE-2017-15268.patch, gnu/packages/patches/qemu-CVE-2017-15289.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them. * gnu/packages/virtualization.scm (qemu)[source]: Use them.