https://sources.debian.org/patches/cpio/2.13%2Bdfsg-7.1/revert-CVE-2015-1197-handling.patch/
https://bugs.gentoo.org/700020

From: Chris Lamb <lamby@debian.org>
Date: Sat, 1 Feb 2020 13:36:37 +0100
Subject: Fix a regression in handling of CVE-2015-1197 &
 --no-absolute-filenames.

See:

  * https://bugs.debian.org/946267
  * https://bugs.debian.org/946469

This reverts (most of): https://git.savannah.gnu.org/cgit/cpio.git/diff/?id=45b0ee2b407913c533f7ded8d6f8cbeec16ff6ca&id2=3177d660a4c62a6acb538b0f7c54ba423698889a
--- a/src/copyin.c
+++ b/src/copyin.c
@@ -646,8 +646,6 @@ copyin_link (struct cpio_file_stat *file_hdr, int in_file_des)
       link_name = xstrdup (file_hdr->c_tar_linkname);
     }
 
-  cpio_safer_name_suffix (link_name, true, !no_abs_paths_flag, false);
-  
   res = UMASKED_SYMLINK (link_name, file_hdr->c_name,
 			 file_hdr->c_mode);
   if (res < 0 && create_dir_flag)
--- a/tests/testsuite
+++ b/tests/testsuite
@@ -2787,7 +2787,7 @@ read at_status <"$at_status_file"
 #AT_START_14
 at_fn_group_banner 14 'CVE-2015-1197.at:17' \
   "CVE-2015-1197 (--no-absolute-filenames for symlinks)" ""
-at_xfail=no
+at_xfail=yes
 (
   $as_echo "14. $at_setup_line: testing $at_desc ..."
   $at_traceon

--- a/tests/CVE-2015-1197.at
+++ b/tests/CVE-2015-1197.at
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 AT_SETUP([CVE-2015-1197 (--no-absolute-filenames for symlinks)])
+AT_XFAIL_IF([true])
 AT_CHECK([
 tempdir=$(pwd)/tmp
 mkdir $tempdir