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linux/drivers/char
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Julius Werner b299cde245 drivers: char: mem: Check for address space wraparound with mmap() 
/dev/mem currently allows mmap() mappings that wrap around the end of
the physical address space, which should probably be illegal. It
circumvents the existing STRICT_DEVMEM permission check because the loop
immediately terminates (as the start address is already higher than the
end address). On the x86_64 architecture it will then cause a panic
(from the BUG(start >= end) in arch/x86/mm/pat.c:reserve_memtype()).

This patch adds an explicit check to make sure offset + size will not
wrap around in the physical address type.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-18 16:53:55 +02:00
..
agp agp: use set_memory.h header 2017-05-08 17:15:13 -07:00
hw_random Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-05-02 15:53:46 -07:00
ipmi Annotation of module parameters that specify device settings 2017-05-10 19:13:03 -07:00
mwave Annotate hardware config module parameters in drivers/char/mwave/ 2017-04-20 12:02:32 +01:00
pcmcia lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
tpm char/misc patches for 4.12-rc1 2017-05-04 19:15:35 -07:00
xilinx_hwicap char: xilinx_hwicap: Remove pointless local variables 2017-01-25 11:41:44 +01:00
xillybus char: xillybus: Fix spelling mistake and comment 2016-08-31 14:47:54 +02:00
apm-emulation.c apm-emulation: move APM_MINOR_DEV to include/linux/miscdevice.h 2017-01-10 21:46:41 +01:00
applicom.c Annotate hardware config module parameters in drivers/char/ 2017-04-20 12:02:32 +01:00
applicom.h
bfin-otp.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
bsr.c
ds1302.c ds1302: remove unneeded linux/miscdevice.h include 2017-01-10 21:46:41 +01:00
ds1620.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
dsp56k.c format-security: move static strings to const 2017-05-08 17:15:14 -07:00
dtlk.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
efirtc.c
generic_nvram.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hangcheck-timer.c hangcheck-timer: Fix typo in comment 2017-04-08 18:08:54 +02:00
hpet.c hpet: Make cmd parameter of hpet_ioctl_common() unsigned 2017-03-17 15:10:49 +09:00
Kconfig TTY/Serial driver patches for 4.11-rc1 2017-02-22 12:17:25 -08:00
lp.c char: lp: fix possible integer overflow in lp_setup() 2017-05-16 23:05:20 +02:00
Makefile RTC for 4.8 2016-08-05 09:48:22 -04:00
mbcs.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mbcs.h
mem.c drivers: char: mem: Check for address space wraparound with mmap() 2017-05-18 16:53:55 +02:00
misc.c drivers: char: misc: Replace printk with pr_err. 2017-04-08 17:53:06 +02:00
mmtimer.c time: Change k_clock timer_set() and timer_get() to use timespec64 2017-04-14 21:49:56 +02:00
mspec.c drivers, char: convert vma_data.refcnt from atomic_t to refcount_t 2017-03-23 13:57:19 +01:00
nsc_gpio.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
nvram.c char/nvram: set array of const as const 2016-02-08 14:57:30 -08:00
nwbutton.c drivers/char/nwbutton: Fix build breakage caused by include file reshuffling 2017-03-07 08:35:49 +01:00
nwbutton.h
nwflash.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
pc8736x_gpio.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
powernv-op-panel.c powerpc/powernv: Add driver for operator panel on FSP machines 2016-06-29 17:33:46 +10:00
ppdev.c ppdev: fix registering same device name 2017-03-16 17:32:21 +09:00
ps3flash.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
random.c random: move random_min_urandom_seed into CONFIG_SYSCTL ifdef block 2017-02-06 20:46:49 -05:00
raw.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
rtc.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
scx200_gpio.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
snsc_event.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
snsc.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
snsc.h
sonypi.c scripts/spelling.txt: add "initialiazation" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
tb0219.c mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
tile-srom.c tile-srom: allow the driver to be built as a module 2016-11-10 15:18:56 +01:00
tlclk.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
toshiba.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
ttyprintk.c ttyprintk: Neaten and simplify printing 2016-09-13 17:30:17 +02:00
uv_mmtimer.c
virtio_console.c virtio: fixes, cleanups, performance 2017-05-10 11:33:08 -07:00