usa	2015-12-16 16:14:32 +0900 (Wed, 16 Dec 2015)

  New Revision: 53148

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=53148

  Log:
    merge revision(s) 53083: [Backport #11823]
    
    * io.c (parse_mode_enc): fix buffer overflow.

  Modified directories:
    branches/ruby_2_1/
  Modified files:
    branches/ruby_2_1/ChangeLog
    branches/ruby_2_1/io.c
    branches/ruby_2_1/test/ruby/test_io_m17n.rb
    branches/ruby_2_1/version.h
Index: ruby_2_1/ChangeLog
===================================================================
--- ruby_2_1/ChangeLog	(revision 53147)
+++ ruby_2_1/ChangeLog	(revision 53148)
@@ -1,3 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/ruby_2_1/ChangeLog#L1
+Wed Dec 16 16:13:04 2015  Nobuyoshi Nakada  <nobu@r...>
+
+	* io.c (parse_mode_enc): fix buffer overflow.
+
 Wed Dec 16 16:10:52 2015  Eric Wong  <e@8...>
 
 	* insns.def (opt_case_dispatch): avoid converting Infinity
Index: ruby_2_1/io.c
===================================================================
--- ruby_2_1/io.c	(revision 53147)
+++ ruby_2_1/io.c	(revision 53148)
@@ -5059,9 +5059,11 @@ parse_mode_enc(const char *estr, rb_enco https://github.com/ruby/ruby/blob/trunk/ruby_2_1/io.c#L5059
 	    fmode |= FMODE_SETENC_BY_BOM;
 	    estr += 4;
             len -= 4;
-	    memcpy(encname, estr, len);
-	    encname[len] = '\0';
-	    estr = encname;
+	    if (len > 0 && len <= ENCODING_MAXNAMELEN) {
+		memcpy(encname, estr, len);
+		encname[len] = '\0';
+		estr = encname;
+	    }
 	}
 	idx = rb_enc_find_index(estr);
     }
Index: ruby_2_1/version.h
===================================================================
--- ruby_2_1/version.h	(revision 53147)
+++ ruby_2_1/version.h	(revision 53148)
@@ -1,6 +1,6 @@ https://github.com/ruby/ruby/blob/trunk/ruby_2_1/version.h#L1
 #define RUBY_VERSION "2.1.8"
 #define RUBY_RELEASE_DATE "2015-12-16"
-#define RUBY_PATCHLEVEL 437
+#define RUBY_PATCHLEVEL 438
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 12
Index: ruby_2_1/test/ruby/test_io_m17n.rb
===================================================================
--- ruby_2_1/test/ruby/test_io_m17n.rb	(revision 53147)
+++ ruby_2_1/test/ruby/test_io_m17n.rb	(revision 53148)
@@ -2073,6 +2073,19 @@ EOT https://github.com/ruby/ruby/blob/trunk/ruby_2_1/test/ruby/test_io_m17n.rb#L2073
     }
   end
 
+  def test_bom_too_long_utfname
+    assert_separately([], <<-'end;') # do
+      assert_warn(/Unsupported encoding/) {
+        open(IO::NULL, "r:bom|utf-" + "x" * 10000) {}
+      }
+    end;
+    assert_separately([], <<-'end;') # do
+      assert_warn(/Unsupported encoding/) {
+        open(IO::NULL, encoding: "bom|utf-" + "x" * 10000) {}
+      }
+    end;
+  end
+
   def test_cbuf
     with_tmpdir {
       fn = "tst"

Property changes on: ruby_2_1
___________________________________________________________________
Modified: svn:mergeinfo
   Merged /trunk:r53083


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