Apply fixes from upstream for XSA-133

The patch really belongs here rather than in sysutils/xenkernel45 (where
it is already applied).

3 files changed, 135 insertions, 3 deletions

diff --git a/sysutils/xentools45/Makefile b/sysutils/xentools45/Makefile
index cb922f4eb6d..ab4b175df97 100644
--- a/sysutils/xentools45/Makefile
+++ b/sysutils/xentools45/Makefile
@@ -1,11 +1,11 @@
-# $NetBSD: Makefile,v 1.6 2015/04/19 13:13:21 spz Exp $
+# $NetBSD: Makefile,v 1.7 2015/06/05 18:15:42 khorben Exp $
 
 VERSION=	4.5.0
 VERSION_IPXE=	9a93db3f0947484e30e753bbd61a10b17336e20e
 
 DISTNAME=		xen-${VERSION}
 PKGNAME=		xentools45-${VERSION}
-PKGREVISION=		3
+PKGREVISION=		4
 CATEGORIES=		sysutils
 MASTER_SITES=		http://bits.xensource.com/oss-xen/release/${VERSION}/
 
diff --git a/sysutils/xentools45/distinfo b/sysutils/xentools45/distinfo
index 300b8e333c5..e0eaf2e2a9b 100644
--- a/sysutils/xentools45/distinfo
+++ b/sysutils/xentools45/distinfo
@@ -1,4 +1,4 @@
-$NetBSD: distinfo,v 1.6 2015/04/19 13:13:21 spz Exp $
+$NetBSD: distinfo,v 1.7 2015/06/05 18:15:42 khorben Exp $
 
 SHA1 (ipxe-git-9a93db3f0947484e30e753bbd61a10b17336e20e.tar.gz) = fecadf952821e830ce1a1d19655288eef8488f88
 RMD160 (ipxe-git-9a93db3f0947484e30e753bbd61a10b17336e20e.tar.gz) = 539bfa12db7054228250d6dd380bbf96c1a040f8
@@ -18,6 +18,7 @@ SHA1 (patch-.._docs_man_xlcpupool.cfg.pod.5) = b44813af965e4d9d0d51c18b22d286736
 SHA1 (patch-CVE-2015-2152) = 5a1cabf330b3a1bd902adf2b33dd5c4c32b8ab9d
 SHA1 (patch-CVE-2015-2752) = 85bcb80dab938b85da3342e7001d95bacf7f49e5
 SHA1 (patch-CVE-2015-2756) = 350cfd57a77d90997b81c7186e320bb52fb62d75
+SHA1 (patch-CVE-2015-3456) = 268b4dcb47bdf760e146b81184022e46d8a9d2d7
 SHA1 (patch-Makefile) = 5d5b9678ed9764275ee95f49d24e8538a0e8a01c
 SHA1 (patch-Rules.mk) = e0dc4234c35dc2d78afad4a90b0af829a6a10b50
 SHA1 (patch-blktap_drivers_Makefile) = 7cc53b2a0dea1694a969046ab8542271ca63f9e7
diff --git a/sysutils/xentools45/patches/patch-CVE-2015-3456 b/sysutils/xentools45/patches/patch-CVE-2015-3456
new file mode 100644
index 00000000000..a607a48fb36
--- /dev/null
+++ b/sysutils/xentools45/patches/patch-CVE-2015-3456
@@ -0,0 +1,131 @@
+$NetBSD: patch-CVE-2015-3456,v 1.1 2015/06/05 18:15:42 khorben Exp $
+
+fdc: force the fifo access to be in bounds of the allocated buffer
+
+During processing of certain commands such as FD_CMD_READ_ID and
+FD_CMD_DRIVE_SPECIFICATION_COMMAND the fifo memory access could
+get out of bounds leading to memory corruption with values coming
+from the guest.
+
+Fix this by making sure that the index is always bounded by the
+allocated memory.
+
+This is CVE-2015-3456.
+
+Signed-off-by: Petr Matousek <pmatouse@redhat.com>
+Reviewed-by: John Snow <jsnow@redhat.com>
+
+--- qemu-xen/hw/block/fdc.c
++++ qemu-xen/hw/block/fdc.c
+@@ -1497,7 +1497,7 @@ static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
+ {
+     FDrive *cur_drv;
+     uint32_t retval = 0;
+-    int pos;
++    uint32_t pos;
+ 
+     cur_drv = get_cur_drv(fdctrl);
+     fdctrl->dsr &= ~FD_DSR_PWRDOWN;
+@@ -1506,8 +1506,8 @@ static uint32_t fdctrl_read_data(FDCtrl *fdctrl)
+         return 0;
+     }
+     pos = fdctrl->data_pos;
++    pos %= FD_SECTOR_LEN;
+     if (fdctrl->msr & FD_MSR_NONDMA) {
+-        pos %= FD_SECTOR_LEN;
+         if (pos == 0) {
+             if (fdctrl->data_pos != 0)
+                 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
+@@ -1852,10 +1852,13 @@ static void fdctrl_handle_option(FDCtrl *fdctrl, int direction)
+ static void fdctrl_handle_drive_specification_command(FDCtrl *fdctrl, int direction)
+ {
+     FDrive *cur_drv = get_cur_drv(fdctrl);
++    uint32_t pos;
+ 
+-    if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
++    pos = fdctrl->data_pos - 1;
++    pos %= FD_SECTOR_LEN;
++    if (fdctrl->fifo[pos] & 0x80) {
+         /* Command parameters done */
+-        if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
++        if (fdctrl->fifo[pos] & 0x40) {
+             fdctrl->fifo[0] = fdctrl->fifo[1];
+             fdctrl->fifo[2] = 0;
+             fdctrl->fifo[3] = 0;
+@@ -1955,7 +1958,7 @@ static uint8_t command_to_handler[256];
+ static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
+ {
+     FDrive *cur_drv;
+-    int pos;
++    uint32_t pos;
+ 
+     /* Reset mode */
+     if (!(fdctrl->dor & FD_DOR_nRESET)) {
+@@ -2004,7 +2007,9 @@ static void fdctrl_write_data(FDCtrl *fdctrl, uint32_t value)
+     }
+ 
+     FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
+-    fdctrl->fifo[fdctrl->data_pos++] = value;
++    pos = fdctrl->data_pos++;
++    pos %= FD_SECTOR_LEN;
++    fdctrl->fifo[pos] = value;
+     if (fdctrl->data_pos == fdctrl->data_len) {
+         /* We now have all parameters
+          * and will be able to treat the command
+--- qemu-xen-traditional/hw/fdc.c
++++ qemu-xen-traditional/hw/fdc.c
+@@ -1318,7 +1318,7 @@ static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
+ {
+     fdrive_t *cur_drv;
+     uint32_t retval = 0;
+-    int pos;
++    uint32_t pos;
+ 
+     cur_drv = get_cur_drv(fdctrl);
+     fdctrl->dsr &= ~FD_DSR_PWRDOWN;
+@@ -1327,8 +1327,8 @@ static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
+         return 0;
+     }
+     pos = fdctrl->data_pos;
++    pos %= FD_SECTOR_LEN;
+     if (fdctrl->msr & FD_MSR_NONDMA) {
+-        pos %= FD_SECTOR_LEN;
+         if (pos == 0) {
+             if (fdctrl->data_pos != 0)
+                 if (!fdctrl_seek_to_next_sect(fdctrl, cur_drv)) {
+@@ -1673,10 +1673,13 @@ static void fdctrl_handle_option (fdctrl_t *fdctrl, int direction)
+ static void fdctrl_handle_drive_specification_command (fdctrl_t *fdctrl, int direction)
+ {
+     fdrive_t *cur_drv = get_cur_drv(fdctrl);
++    uint32_t pos;
+ 
+-    if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
++    pos = fdctrl->data_pos - 1;
++    pos %= FD_SECTOR_LEN;
++    if (fdctrl->fifo[pos] & 0x80) {
+         /* Command parameters done */
+-        if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
++        if (fdctrl->fifo[pos] & 0x40) {
+             fdctrl->fifo[0] = fdctrl->fifo[1];
+             fdctrl->fifo[2] = 0;
+             fdctrl->fifo[3] = 0;
+@@ -1771,7 +1774,7 @@ static uint8_t command_to_handler[256];
+ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
+ {
+     fdrive_t *cur_drv;
+-    int pos;
++    uint32_t pos;
+ 
+     /* Reset mode */
+     if (!(fdctrl->dor & FD_DOR_nRESET)) {
+@@ -1817,7 +1820,9 @@ static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
+     }
+ 
+     FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
+-    fdctrl->fifo[fdctrl->data_pos++] = value;
++    pos = fdctrl->data_pos++;
++    pos %= FD_SECTOR_LEN;
++    fdctrl->fifo[pos] = value;
+     if (fdctrl->data_pos == fdctrl->data_len) {
+         /* We now have all parameters
+          * and will be able to treat the command