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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.
This commit is contained in:
Mark H Weaver 2015-05-14 19:01:26 -04:00
parent 3736a110bd
commit f6708fcdb2
3 changed files with 90 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
gnu-system.am
View File

@ -536,6 +536,7 @@ dist_patch_DATA = \
gnu/packages/patches/python2-rdflib-drop-sparqlwrapper.patch \
gnu/packages/patches/python2-sqlite-3.8.4-test-fix.patch \
gnu/packages/patches/python2-pygobject-2-gi-info-type-error-domain.patch \
gnu/packages/patches/qemu-CVE-2015-3456.patch \
gnu/packages/patches/qt4-ldflags.patch \
gnu/packages/patches/qt4-tests.patch \
gnu/packages/patches/qt5-conflicting-typedefs.patch \

85
gnu/packages/patches/qemu-CVE-2015-3456.patch Normal file
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@ -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

6
gnu/packages/qemu.scm
View File

@ -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