1 files changed, 94 insertions, 0 deletions
diff --git a/textproc/libxml2/patches/patch-buf.c b/textproc/libxml2/patches/patch-buf.c
new file mode 100644
index 00000000000..3f7cf8fb2bd
--- /dev/null
+++ b/textproc/libxml2/patches/patch-buf.c
@@ -0,0 +1,94 @@
+$NetBSD: patch-buf.c,v 1.1 2015/04/24 11:32:29 spz Exp $
+
+patch for CVE-2015-1819 Enforce the reader to run in constant memory
+from https://git.gnome.org/browse/libxml2/commit/?id=213f1fe0d76d30eaed6e5853057defc43e6df2c9
+part 1
+
+--- buf.c.orig	2014-10-13 08:01:31.000000000 +0000
++++ buf.c
+@@ -27,6 +27,7 @@
+ #include <libxml/tree.h>
+ #include <libxml/globals.h>
+ #include <libxml/tree.h>
++#include <libxml/parserInternals.h> /* for XML_MAX_TEXT_LENGTH */
+ #include "buf.h"
+ 
+ #define WITH_BUFFER_COMPAT
+@@ -299,7 +300,8 @@ xmlBufSetAllocationScheme(xmlBufPtr buf,
+     if ((scheme == XML_BUFFER_ALLOC_DOUBLEIT) ||
+         (scheme == XML_BUFFER_ALLOC_EXACT) ||
+         (scheme == XML_BUFFER_ALLOC_HYBRID) ||
+-        (scheme == XML_BUFFER_ALLOC_IMMUTABLE)) {
++        (scheme == XML_BUFFER_ALLOC_IMMUTABLE) ||
++        (scheme == XML_BUFFER_ALLOC_BOUNDED)) {
+ 	buf->alloc = scheme;
+         if (buf->buffer)
+             buf->buffer->alloc = scheme;
+@@ -458,6 +460,18 @@ xmlBufGrowInternal(xmlBufPtr buf, size_t
+     size = buf->use + len + 100;
+ #endif
+ 
++    if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++        /*
++	 * Used to provide parsing limits
++	 */
++        if ((buf->use + len >= XML_MAX_TEXT_LENGTH) ||
++	    (buf->size >= XML_MAX_TEXT_LENGTH)) {
++	    xmlBufMemoryError(buf, "buffer error: text too long\n");
++	    return(0);
++	}
++	if (size >= XML_MAX_TEXT_LENGTH)
++	    size = XML_MAX_TEXT_LENGTH;
++    }
+     if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
+         size_t start_buf = buf->content - buf->contentIO;
+ 
+@@ -738,7 +752,15 @@ xmlBufResize(xmlBufPtr buf, size_t size)
+         return(0);
+     CHECK_COMPAT(buf)
+ 
+-    if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return(0);
++    if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++        /*
++	 * Used to provide parsing limits
++	 */
++        if (size >= XML_MAX_TEXT_LENGTH) {
++	    xmlBufMemoryError(buf, "buffer error: text too long\n");
++	    return(0);
++	}
++    }
+ 
+     /* Don't resize if we don't have to */
+     if (size < buf->size)
+@@ -867,6 +889,15 @@ xmlBufAdd(xmlBufPtr buf, const xmlChar *
+ 
+     needSize = buf->use + len + 2;
+     if (needSize > buf->size){
++	if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++	    /*
++	     * Used to provide parsing limits
++	     */
++	    if (needSize >= XML_MAX_TEXT_LENGTH) {
++		xmlBufMemoryError(buf, "buffer error: text too long\n");
++		return(-1);
++	    }
++	}
+         if (!xmlBufResize(buf, needSize)){
+ 	    xmlBufMemoryError(buf, "growing buffer");
+             return XML_ERR_NO_MEMORY;
+@@ -938,6 +969,15 @@ xmlBufAddHead(xmlBufPtr buf, const xmlCh
+     }
+     needSize = buf->use + len + 2;
+     if (needSize > buf->size){
++	if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++	    /*
++	     * Used to provide parsing limits
++	     */
++	    if (needSize >= XML_MAX_TEXT_LENGTH) {
++		xmlBufMemoryError(buf, "buffer error: text too long\n");
++		return(-1);
++	    }
++	}
+         if (!xmlBufResize(buf, needSize)){
+ 	    xmlBufMemoryError(buf, "growing buffer");
+             return XML_ERR_NO_MEMORY;