* gnu/packages/patches/libtiff-CVE-2017-9936.patch, gnu/packages/patches/libtiff-CVE-2017-10688.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them. * gnu/packages/image.scm (libtiff-4.0.8)[source]: Use them. Signed-off-by: Leo Famulari <leo@famulari.name>