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vt: clear selection before resizing
authorScot Doyle <lkml14@scotdoyle.com>
Thu, 13 Oct 2016 17:12:43 +0000 (12:12 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 10 Nov 2016 15:36:34 +0000 (16:36 +0100)
commit3425e397fb23cc2e8e6fb8f5b8226dcb447e84dd
tree9f170e7a051b8095f620d2858e7704d09a5a0c8dtree | snapshot
parentdc1555e670c373bfa4ca2e1e2f839d5fe2b4501acommit | diff
vt: clear selection before resizing

commit 009e39ae44f4191188aeb6dfbf661b771dbbe515 upstream.

When resizing a vt its selection may exceed the new size, resulting in
an invalid memory access [1]. Clear the selection before resizing.

[1] http://lkml.kernel.org/r/CACT4Y+acDTwy4umEvf5ROBGiRJNrxHN4Cn5szCXE5Jw-d1B=Xw@mail.gmail.com

Reported-and-tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/vt/vt.c diff | blob | history
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