Gustavo A. R. Silva 1aa698b651 tty: vt_ioctl: fix potential Spectre v1 ... commit e97267cb4d upstream. vsa.console is 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/tty/vt/vt_ioctl.c:711 vt_ioctl() warn: potential spectre issue 'vc_cons' [r] Fix this by sanitizing vsa.console before using it to index vc_cons 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 Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Reviewed-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-09-29 03:08:53 -07:00
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.gitignore
consolemap.c	tty: consolemap.c: move assignment out of if () block	2015-05-10 19:04:16 +02:00
cp437.uni
defkeymap.c_shipped
defkeymap.map
keyboard.c	vt: fix Scroll Lock LED trigger name	2017-01-09 08:07:47 +01:00
Makefile	tty: vt/Makefile: set the variables to static	2013-01-15 21:52:24 -08:00
selection.c	tty: vt: Fix !TASK_RUNNING diagnostic warning from paste_selection()	2015-07-23 18:08:29 -07:00
vc_screen.c	vc: switch to fixed_size_llseek()	2013-06-29 12:57:30 +04:00
vt_ioctl.c	tty: vt_ioctl: fix potential Spectre v1	2018-09-29 03:08:53 -07:00
vt.c	vt: change SGR 21 to follow the standards	2018-04-08 11:52:01 +02:00