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Gustavo A. R. Silva 43c9207d02 atm: zatm: Fix potential Spectre v1 
[ Upstream commit ced9e19150 ]

pool can be indirectly controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability.

This issue was detected with the help of Smatch:

drivers/atm/zatm.c:1491 zatm_ioctl() warn: potential spectre issue
'zatm_dev->pool_info' (local cap)

Fix this by sanitizing pool before using it to index
zatm_dev->pool_info

Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].

[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-07-22 14:28:43 +02:00
..
.gitignore
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Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
adummy.c atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
ambassador.c atm: ambassador: constify pci_device_id. 2017-07-16 16:38:02 -07:00
ambassador.h ATM: Delete no use FILL_RX_POOLS_IN_BH marco 2011-07-08 09:06:31 -07:00
atmtcp.c atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
eni.c atm: eni: constify pci_device_id. 2017-07-16 16:38:02 -07:00
eni.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
firestream.c atm: firestream: constify pci_device_id. 2017-07-16 16:38:02 -07:00
firestream.h atm: firestream: remove duplicate define 2013-10-21 18:46:46 -04:00
fore200e.c atm: fore200e: constify pci_device_id. 2017-07-16 16:38:02 -07:00
fore200e.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
he.c atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
he.h atm: remove deprecated use of pci api 2015-01-18 00:28:41 -05:00
horizon.c atm: horizon: Fix irq release error 2017-12-14 09:53:13 +01:00
horizon.h
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idt77105.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
idt77105.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idt77252.c atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
idt77252.h Fix common misspellings 2011-03-31 11:26:23 -03:00
idt77252_tables.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iphase.c atm: iphase: constify pci_device_id. 2017-07-16 16:38:02 -07:00
iphase.h scripts/spelling.txt: add "followings" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
lanai.c atm: lanai: constify pci_device_id. 2017-07-16 16:38:02 -07:00
midway.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nicstar.c atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
nicstar.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nicstarmac.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nicstarmac.copyright drivers/atm/: remove CVS keywords 2008-05-20 14:52:25 -07:00
solos-attrlist.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
solos-pci.c atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
suni.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
suni.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tonga.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
uPD98401.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
uPD98402.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
uPD98402.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zatm.c atm: zatm: Fix potential Spectre v1 2018-07-22 14:28:43 +02:00
zatm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zeprom.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00