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authorMark H Weaver <mhw@netris.org>2015-05-14 19:01:26 -0400
committerMark H Weaver <mhw@netris.org>2015-05-14 19:36:19 -0400
commitf6708fcdb2b6977e0a2a7449aa917dc373545455 (patch)
treee65d5f54b6c4ca4fcbeb29d02378644ac994864e /gnu
parent3736a110bd60e2453dc51e405d36fed51d4cb9b2 (diff)
downloadguix-f6708fcdb2b6977e0a2a7449aa917dc373545455.tar
guix-f6708fcdb2b6977e0a2a7449aa917dc373545455.tar.gz
gnu: qemu: Update to 2.3.0; add fix for CVE-2015-3456.
* gnu/packages/patches/qemu-CVE-2015-3456.patch: New file. * gnu-system.am (dist_patch_DATA): Add it. * gnu/packages/qemu.scm (qemu-headless): Update to 2.3.0. Add patch.
Diffstat (limited to 'gnu')
-rw-r--r--gnu/packages/patches/qemu-CVE-2015-3456.patch85
-rw-r--r--gnu/packages/qemu.scm6
2 files changed, 89 insertions, 2 deletions
diff --git a/gnu/packages/patches/qemu-CVE-2015-3456.patch b/gnu/packages/patches/qemu-CVE-2015-3456.patch
new file mode 100644
index 0000000000..9514f7c3e5
--- /dev/null
+++ b/gnu/packages/patches/qemu-CVE-2015-3456.patch
@@ -0,0 +1,85 @@
+From e907746266721f305d67bc0718795fedee2e824c Mon Sep 17 00:00:00 2001
+From: Petr Matousek <pmatouse@redhat.com>
+Date: Wed, 6 May 2015 09:48:59 +0200
+Subject: [PATCH] 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>
+Signed-off-by: John Snow <jsnow@redhat.com>
+---
+ hw/block/fdc.c | 17 +++++++++++------
+ 1 file changed, 11 insertions(+), 6 deletions(-)
+
+diff --git a/hw/block/fdc.c b/hw/block/fdc.c
+index f72a392..d8a8edd 100644
+--- a/hw/block/fdc.c
++++ b/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
+--
+2.2.1
+
diff --git a/gnu/packages/qemu.scm b/gnu/packages/qemu.scm
index 77aeecf40c..e9a2c08743 100644
--- a/gnu/packages/qemu.scm
+++ b/gnu/packages/qemu.scm
@@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -42,14 +43,15 @@
;; This is QEMU without GUI support.
(package
(name "qemu-headless")
- (version "2.2.0")
+ (version "2.3.0")
(source (origin
(method url-fetch)
(uri (string-append "http://wiki.qemu-project.org/download/qemu-"
version ".tar.bz2"))
(sha256
(base32
- "1703c3scl5n07gmpilg7g2xzyxnr7jczxgx6nn4m8kv9gin9p35n"))))
+ "120m53c3p28qxmfzllicjzr8syjv6v4d9rsyrgkp7gnmcgvvgfmn"))
+ (patches (list (search-patch "qemu-CVE-2015-3456.patch")))))
(build-system gnu-build-system)
(arguments
'(#:phases (alist-replace