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0d027c01cd
linux/drivers
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Rusty Russell 0d027c01cd lguest: Fix Malicious Guest GDT Host Crash 
If a Guest makes hypercall which sets a GDT entry to not present, we
currently set any segment registers using that GDT entry to 0.
Unfortunately, this is not sufficient: there are other ways of
altering GDT entries which will cause a fault.

The correct solution to do what Linux does: let them set any GDT value
they want and handle the #GP when popping causes a fault.  This has
the added benefit of making our Switcher slightly more robust in the
case of any other bugs which cause it to fault.

We kill the Guest if it causes a fault in the Switcher: it's the
Guest's responsibility to make sure it's not using segments when it
changes them.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-09 08:14:56 -07:00
..
acorn/char Remove the arm26 port 2007-07-31 15:39:39 -07:00
acpi ACPI: delete CONFIG_ACPI_PROCFS_SLEEP (again) 2007-07-31 20:40:08 -07:00
amba
ata [ARM] pata_icside: fix the FIXMEs 2007-08-06 16:10:54 +01:00
atm
auxdisplay
base CPU online file permission 2007-07-31 15:39:39 -07:00
block cciss: fix memory leak 2007-07-31 15:39:43 -07:00
bluetooth
cdrom [BLOCK] Get rid of request_queue_t typedef 2007-07-24 09:28:11 +02:00
char drm/i915: Fix i965 secured batchbuffer usage 2007-08-06 17:46:23 -07:00
clocksource
connector
cpufreq
crypto
dio
dma [NET_DMA]: remove unused dma_memcpy_to_kernel_iovec 2007-07-31 02:28:03 -07:00
edac drivers/edac: fix pasemi kconfig depends 2007-07-26 11:35:18 -07:00
eisa
fc4
firewire firewire: fw-core: make two variables static 2007-08-02 20:34:17 +02:00
firmware
hid HID: Never call hid_free_buffers() when usbhid_device has been freed 2007-08-02 13:48:04 +02:00
hwmon hwmon: fscher read control bugfix 2007-07-30 21:14:00 -04:00
i2c Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION 2007-07-29 16:45:38 -07:00
ide scc_pata: PIO fixes 2007-08-01 23:46:46 +02:00
ieee1394 ieee1394: sbp2: more correct Kconfig dependencies 2007-08-02 20:34:16 +02:00
infiniband in-string typos of "error" 2007-07-31 15:39:40 -07:00
input [MIPS] Fixup secure computing stuff. 2007-07-31 21:35:21 +01:00
isdn Remove 'isdn_* is defined but unused' warnings 2007-07-31 15:39:44 -07:00
kvm KVM: x86 emulator: fix debug reg mov instructions 2007-08-06 17:54:41 -07:00
leds
lguest lguest: Fix Malicious Guest GDT Host Crash 2007-08-09 08:14:56 -07:00
macintosh [POWERPC] Clean up duplicate includes in drivers/macintosh/ 2007-07-22 21:31:00 +10:00
mca
md md: handle writes to broken raid10 arrays gracefully 2007-07-31 15:39:38 -07:00
media V4L/DVB (5939): dvb-pll: make struct dvb_pll_fcv1236d static 2007-07-30 16:26:37 -03:00
message Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2007-08-06 17:48:34 -07:00
mfd
misc Pull auto-load-modules into release branch 2007-07-25 01:36:53 -04:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 2007-07-26 14:00:56 -07:00
mtd [MTD] Makefile fix for mtdsuper 2007-08-03 12:42:40 +01:00
net drivers/net/ibmveth.c: memset fix 2007-08-07 17:36:20 -04:00
nubus
of
oprofile
parisc
parport parport_pc locking fix 2007-07-31 15:39:37 -07:00
pci pci: rename __pci_reenable_device() to pci_reenable_device() 2007-08-01 10:00:56 -04:00
pcmcia pcmcia: give socket time to power down 2007-07-31 15:39:38 -07:00
pnp ACPI: restore CONFIG_ACPI_SLEEP 2007-07-29 16:53:59 -07:00
power Don't compile the PMU power driver on 64-bit PowerPC 2007-07-23 12:42:45 +01:00
ps3
rapidio
rtc rtc-m48t59 driver NO_IRQ mode fixup 2007-07-31 15:39:44 -07:00
s390 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2007-08-06 17:48:34 -07:00
sbus Videopix Frame Grabber: Fix unreleased lock in vfc_debug() 2007-07-31 15:39:43 -07:00
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2007-08-06 17:48:34 -07:00
serial serial: fix 8250 early console setup 2007-08-03 15:02:56 -07:00
sh
sn
spi spi device setup gets better error checking 2007-07-31 15:39:44 -07:00
tc
telephony
uio
usb USB: "sparse" cleanups for usb gadgets 2007-07-30 13:27:47 -07:00
video [CG6]: fix memory size detection 2007-08-03 14:08:26 -07:00
w1 drivers/ misc __iomem annotations 2007-07-26 11:11:57 -07:00
xen xenbus_xs.c: fix a use-after-free 2007-07-26 11:35:17 -07:00
zorro
Kconfig
Makefile [WATCHDOG] Fix pcwd_init_module crash 2007-07-29 18:58:39 +00:00