diff -urNp tar-1.22-orig/lib/rtapelib.c tar-1.22/lib/rtapelib.c
--- tar-1.22-orig/lib/rtapelib.c 2007-08-12 09:57:15.000000000 +0200
+++ tar-1.22/lib/rtapelib.c 2010-02-22 13:58:07.000000000 +0100
@@ -573,6 +573,9 @@ rmt_read__ (int handle, char *buffer, si
|| (status = get_status (handle)) == SAFE_READ_ERROR)
return SAFE_READ_ERROR;
+ if (status > length)
+ return SAFE_READ_ERROR;
+
for (counter = 0; counter < status; counter += rlen, buffer += rlen)
{
rlen = safe_read (READ_SIDE (handle), buffer, status - counter);