libyaml: security bump to version 0.1.6

Fixes CVE-2014-2525.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libyaml/libyaml-0001-indent-column-overflow-v2.patch

@@ -1,176 +0,0 @@
-Description: CVE-2013-6393: yaml_parser-{un,}roll-indent: fix int overflow in column argument
- This expands upon the original indent column overflow patch from
- comment #12.
- .
- The default parser indention is represented as an indention of -1.
- The original patch only modified the type of the column parameter to
- the roll/unroll functions, changing it from int to size_t to guard
- against integer overflow.  However, there are code paths that call
- yaml_parser_unroll_indent with a column of -1 in order to reset the
- parser back to the initial indention.  Since the column is now of
- type size_t and thus unsigned, passing a column value of -1 caused
- the column to underflow in this case.
- .
- This new patch modifies the roll/unroll functions to handle the -1
- indent as a special case.  In addition, it adds a new function,
- yaml_parser_reset_indent.  It is nearly an exact copy of
- yaml_parser_unroll_indent, except it does not take a column
- parameter.  Instead it unrolls to a literal -1 indention, which does
- not suffer from the underflow.
- .
- Code paths that previously called yaml_parser_unroll_indent with a
- column of -1 are updated to call the new yaml_parser_reset_indent
- function instead.
- .
- With this patch instead of the original:
- .
- - `make check` still passes
- .
- - The reproducer script completes successfully with exit code 0
- .
- - The issue raised by John Haxby has been corrected and exits with SUCCESS
-Origin: https://bugzilla.redhat.com/show_bug.cgi?id=1033990
-Bug-RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1033990
-Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737076
-Last-Update: 2014-01-29
----
-# HG changeset patch
-# User John Eckersberg <jeckersb@redhat.com>
-# Date 1390870108 18000
-#      Mon Jan 27 19:48:28 2014 -0500
-# Node ID 7179aa474f31e73834adda26b77bfc25bfe5143d
-# Parent  3e6507fa0c26d20c09f8f468f2bd04aa2fd1b5b5
-yaml_parser-{un,}roll-indent: fix int overflow in column argument
-
-diff -r 3e6507fa0c26 -r 7179aa474f31 src/scanner.c
---- a/src/scanner.c	Mon Dec 24 03:51:32 2012 +0000
-+++ b/src/scanner.c	Mon Jan 27 19:48:28 2014 -0500
-@@ -615,11 +615,14 @@
-  */
- 
- static int
--yaml_parser_roll_indent(yaml_parser_t *parser, int column,
-+yaml_parser_roll_indent(yaml_parser_t *parser, size_t column,
-         int number, yaml_token_type_t type, yaml_mark_t mark);
- 
- static int
--yaml_parser_unroll_indent(yaml_parser_t *parser, int column);
-+yaml_parser_unroll_indent(yaml_parser_t *parser, size_t column);
-+
-+static int
-+yaml_parser_reset_indent(yaml_parser_t *parser);
- 
- /*
-  * Token fetchers.
-@@ -1206,7 +1209,7 @@
-  */
- 
- static int
--yaml_parser_roll_indent(yaml_parser_t *parser, int column,
-+yaml_parser_roll_indent(yaml_parser_t *parser, size_t column,
-         int number, yaml_token_type_t type, yaml_mark_t mark)
- {
-     yaml_token_t token;
-@@ -1216,7 +1219,7 @@
-     if (parser->flow_level)
-         return 1;
- 
--    if (parser->indent < column)
-+    if (parser->indent == -1 || parser->indent < column)
-     {
-         /*
-          * Push the current indentation level to the stack and set the new
-@@ -1254,7 +1257,7 @@
- 
- 
- static int
--yaml_parser_unroll_indent(yaml_parser_t *parser, int column)
-+yaml_parser_unroll_indent(yaml_parser_t *parser, size_t column)
- {
-     yaml_token_t token;
- 
-@@ -1263,6 +1266,15 @@
-     if (parser->flow_level)
-         return 1;
- 
-+    /*
-+     * column is unsigned and parser->indent is signed, so if
-+     * parser->indent is less than zero the conditional in the while
-+     * loop below is incorrect.  Guard against that.
-+     */
-+    
-+    if (parser->indent < 0)
-+        return 1;
-+
-     /* Loop through the intendation levels in the stack. */
- 
-     while (parser->indent > column)
-@@ -1283,6 +1295,41 @@
- }
- 
- /*
-+ * Pop indentation levels from the indents stack until the current
-+ * level resets to -1.  For each intendation level, append the
-+ * BLOCK-END token.
-+ */
-+
-+static int
-+yaml_parser_reset_indent(yaml_parser_t *parser)
-+{
-+    yaml_token_t token;
-+
-+    /* In the flow context, do nothing. */
-+
-+    if (parser->flow_level)
-+        return 1;
-+
-+    /* Loop through the intendation levels in the stack. */
-+
-+    while (parser->indent > -1)
-+    {
-+        /* Create a token and append it to the queue. */
-+
-+        TOKEN_INIT(token, YAML_BLOCK_END_TOKEN, parser->mark, parser->mark);
-+
-+        if (!ENQUEUE(parser, parser->tokens, token))
-+            return 0;
-+
-+        /* Pop the indentation level. */
-+
-+        parser->indent = POP(parser, parser->indents);
-+    }
-+
-+    return 1;
-+}
-+
-+/*
-  * Initialize the scanner and produce the STREAM-START token.
-  */
- 
-@@ -1338,7 +1385,7 @@
- 
-     /* Reset the indentation level. */
- 
--    if (!yaml_parser_unroll_indent(parser, -1))
-+    if (!yaml_parser_reset_indent(parser))
-         return 0;
- 
-     /* Reset simple keys. */
-@@ -1369,7 +1416,7 @@
- 
-     /* Reset the indentation level. */
- 
--    if (!yaml_parser_unroll_indent(parser, -1))
-+    if (!yaml_parser_reset_indent(parser))
-         return 0;
- 
-     /* Reset simple keys. */
-@@ -1407,7 +1454,7 @@
- 
-     /* Reset the indentation level. */
- 
--    if (!yaml_parser_unroll_indent(parser, -1))
-+    if (!yaml_parser_reset_indent(parser))
-         return 0;
- 
-     /* Reset simple keys. */

package/libyaml/libyaml-0002-node-id-hardening.patch

@@ -1,35 +0,0 @@
-Description: CVE-2013-6393: yaml_stack_extend: guard against integer overflow
- This is a hardening patch also from Florian Weimer
- <fweimer@redhat.com>.  It is not required to fix this CVE however it
- improves the robustness of the code against future issues by avoiding
- large node ID's in a central place.
-Origin: https://bugzilla.redhat.com/show_bug.cgi?id=1033990
-Bug-RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1033990
-Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737076
-Last-Update: 2014-01-29
----
-# HG changeset patch
-# User Florian Weimer <fweimer@redhat.com>
-# Date 1389274355 -3600
-#      Thu Jan 09 14:32:35 2014 +0100
-# Node ID 034d7a91581ac930e5958683f1a06f41e96d24a2
-# Parent  a54d7af707f25dc298a7be60fd152001d2b3035b
-yaml_stack_extend: guard against integer overflow
-
-diff --git a/src/api.c b/src/api.c
---- a/src/api.c
-+++ b/src/api.c
-@@ -117,7 +117,12 @@
- YAML_DECLARE(int)
- yaml_stack_extend(void **start, void **top, void **end)
- {
--    void *new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2);
-+    void *new_start;
-+
-+    if ((char *)*end - (char *)*start >= INT_MAX / 2)
-+	return 0;
-+
-+    new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2);
- 
-     if (!new_start) return 0;
- 

package/libyaml/libyaml-0003-string-overflow.patch

@@ -1,28 +0,0 @@
-Description: CVE-2013-6393: yaml_parser_scan_tag_uri: fix int overflow leading to buffer overflow
- This is a proposed patch from Florian Weimer <fweimer@redhat.com> for
- the string overflow issue. It has been ack'd by upstream.
-Origin: https://bugzilla.redhat.com/show_bug.cgi?id=1033990
-Bug-RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1033990
-Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737076
-Last-Update: 2014-01-29
----
-# HG changeset patch
-# User Florian Weimer <fweimer@redhat.com>
-# Date 1389273500 -3600
-#      Thu Jan 09 14:18:20 2014 +0100
-# Node ID a54d7af707f25dc298a7be60fd152001d2b3035b
-# Parent  3e6507fa0c26d20c09f8f468f2bd04aa2fd1b5b5
-yaml_parser_scan_tag_uri: fix int overflow leading to buffer overflow
-
-diff --git a/src/scanner.c b/src/scanner.c
---- a/src/scanner.c
-+++ b/src/scanner.c
-@@ -2574,7 +2574,7 @@
- 
-     /* Resize the string to include the head. */
- 
--    while (string.end - string.start <= (int)length) {
-+    while ((size_t)(string.end - string.start) <= length) {
-         if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) {
-             parser->error = YAML_MEMORY_ERROR;
-             goto error;

package/libyaml/libyaml.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBYAML_VERSION = 0.1.4
+LIBYAML_VERSION = 0.1.6
 LIBYAML_SOURCE = yaml-$(LIBYAML_VERSION).tar.gz
 LIBYAML_SITE = http://pyyaml.org/download/libyaml/
 LIBYAML_INSTALL_STAGING = YES