Merge with 3.2: Issue #12841: Fix tarfile extraction of non-existent uids/gids.
diff --git a/Misc/NEWS b/Misc/NEWS
index b15876b..16e0e40 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -271,6 +271,11 @@
 Library
 -------
 
+- Issue #12841: tarfile unnecessarily checked the existence of numerical user
+  and group ids on extraction. If one of them did not exist the respective id
+  of the current user (i.e. root) was used for the file and ownership
+  information was lost.
+
 - Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape
   more than 128 entities.  Patch by Peter Otten.