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system/qemu: Added patch to fix VENOM vulnerability.

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Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
This commit is contained in:
Edward W. Koenig 2015-05-14 23:25:41 +07:00 committed by Willy Sudiarto Raharjo
parent c2d2a20ef3
commit 55b085e26c
2 changed files with 63 additions and 1 deletions
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6
system/qemu/qemu.SlackBuild
View file

@ -39,10 +39,11 @@
# 1.6a 23-NOV-2014 added overlooked AUDIODRIVERS switch per SBo list
# 1.7 01-JAN-2015 updated to 2.2.0 ; build and link static libusb option (rw, tm, SBo list)
# 1.8 27-APR-2015 updated to version 2.3.0
# 1.9 14-MAY-2015 patched for "Venom" CVE-2015-3456 http://git.qemu.org/?p=qemu.git;a=commitdiff;h=e907746266721f305d67bc0718795fedee2e824c
PRGNAM=qemu
VERSION=${VERSION:-2.3.0}
BUILD=${BUILD:-1}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}
KVMGROUP=${KVMGROUP:-users}
@ -136,6 +137,9 @@ if [ "$LIBUSB" = "yes" ]; then
USBSTATIC="$TMP/$PRGNAM-$VERSION/libusb-static/lib/pkgconfig"
fi
# patch Venom bug CVE-2015-3456
patch -p1 < $CWD/qemu_venom.patch
PKG_CONFIG_PATH+="${USBSTATIC}" \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \

58
system/qemu/qemu_venom.patch Normal file
View file

@ -0,0 +1,58 @@
index f72a392..d8a8edd 100644 (file)
--- 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