diff --git a/ntfs-3g-truncated-check.patch b/ntfs-3g-truncated-check.patch
new file mode 100644
index 0000000..4f35cf9
--- /dev/null
+++ b/ntfs-3g-truncated-check.patch
@@ -0,0 +1,28 @@
+--- src/lowntfs-3g.c.ref	2013-04-04 09:47:16.000000000 +0200
++++ src/lowntfs-3g.c	2013-05-05 15:08:39.000000000 +0200
+@@ -620,9 +620,9 @@
+ 			 * Check whether it's Interix symbolic link, block or
+ 			 * character device.
+ 			 */
+-			if ((size_t)na->data_size <= sizeof(INTX_FILE_TYPES)
++			if ((u64)na->data_size <= sizeof(INTX_FILE_TYPES)
+ 					+ sizeof(ntfschar) * PATH_MAX
+-				&& (size_t)na->data_size >
++				&& (u64)na->data_size >
+ 					sizeof(INTX_FILE_TYPES)) {
+ 				INTX_FILE *intx_file;
+ 
+--- src/ntfs-3g.c.ref	2013-04-04 09:47:16.000000000 +0200
++++ src/ntfs-3g.c	2013-05-05 15:09:13.000000000 +0200
+@@ -792,9 +792,9 @@
+ 			 * Check whether it's Interix symbolic link, block or
+ 			 * character device.
+ 			 */
+-			if ((size_t)na->data_size <= sizeof(INTX_FILE_TYPES)
++			if ((u64)na->data_size <= sizeof(INTX_FILE_TYPES)
+ 					+ sizeof(ntfschar) * PATH_MAX
+-				&& (size_t)na->data_size >
++				&& (u64)na->data_size >
+ 					sizeof(INTX_FILE_TYPES)
+ 				&& !stream_name_len) {
+ 				
diff --git a/ntfs-3g.spec b/ntfs-3g.spec
index f8017a2..14a78c6 100644
--- a/ntfs-3g.spec
+++ b/ntfs-3g.spec
@@ -8,7 +8,7 @@
 Name:		ntfs-3g
 Summary:	Linux NTFS userspace driver
 Version:	2013.1.13
-Release:	3%{?dist}
+Release:	4%{?dist}
 License:	GPLv2+
 Group:		System Environment/Base
 Source0:	http://tuxera.com/opensource/%{name}_ntfsprogs-%{version}%{?subver}.tgz
@@ -25,6 +25,10 @@ Provides:	ntfsprogs-fuse = %{epoch}:%{version}-%{release}
 Obsoletes:	ntfsprogs-fuse
 Provides:	fuse-ntfs-3g = %{epoch}:%{version}-%{release}
 Patch0:		ntfs-3g_ntfsprogs-2011.10.9-RC-ntfsck-unsupported-return-0.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=951603
+Patch1:		ntfsck.c.4Ksectors.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=958681
+Patch2:		ntfs-3g-truncated-check.patch
 
 %description
 NTFS-3G is a stable, open source, GPL licensed, POSIX, read/write NTFS 
@@ -70,6 +74,8 @@ included utilities see man 8 ntfsprogs after installation).
 %prep
 %setup -q -n %{name}_ntfsprogs-%{version}%{?subver}
 %patch0 -p1 -b .unsupported
+%patch1 -p0 -b .4k
+%patch2 -p0 -b .truncated
 
 %build
 CFLAGS="$RPM_OPT_FLAGS -D_FILE_OFFSET_BITS=64"
@@ -168,6 +174,10 @@ rm -rf %{buildroot}%{_defaultdocdir}/%{name}/README
 %exclude %{_mandir}/man8/ntfs-3g*
 
 %changelog
+* Mon May  6 2013 Tom Callaway <spot@fedoraproject.org> - 2:2013.1.13-4
+- apply fixes from upstream for issue with 4K sector drives (bz951603) 
+  and truncated check for Interix types on a 32-bit CPU (bz958681)
+
 * Thu Feb  7 2013 Tom Callaway <spot@fedoraproject.org> - 2:2013.1.13-3
 - drop redundant manpages from ntfsprogs subpackage
 
diff --git a/ntfsck.c.4Ksectors.patch b/ntfsck.c.4Ksectors.patch
new file mode 100644
index 0000000..faac2bc
--- /dev/null
+++ b/ntfsck.c.4Ksectors.patch
@@ -0,0 +1,14 @@
+--- ntfsprogs/ntfsck.c.old	2013-01-13 07:46:35.000000000 +0100
++++ ntfsprogs/ntfsck.c	2013-04-13 12:04:06.000000000 +0200
+@@ -616,9 +616,9 @@
+ 
+ 	// Remove update seq & check it.
+ 	usa = *(u16*)(buffer+usa_ofs); // The value that should be at the end of every sector.
+-	assert_u32_equal(usa_count-1, buflen/bytes_per_sector, "USA length");
++	assert_u32_equal(usa_count-1, buflen/NTFS_BLOCK_SIZE, "USA length");
+ 	for (i=1;i<usa_count;i++) {
+-		u16 *fixup = (u16*)(buffer+bytes_per_sector*i-2); // the value at the end of the sector.
++		u16 *fixup = (u16*)(buffer+NTFS_BLOCK_SIZE*i-2); // the value at the end of the sector.
+ 		u16 saved_val = *(u16*)(buffer+usa_ofs+2*i); // the actual data value that was saved in the us array.
+ 
+ 		assert_u32_equal(*fixup, usa, "fixup");