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(parent: 5673444) | patch
serial: mxs-auart: Fix out-of-bounds access through serial port index
authorGeert Uytterhoeven <geert+renesas@glider.be>
Fri, 23 Feb 2018 13:38:32 +0000 (14:38 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 28 Feb 2018 14:29:59 +0000 (15:29 +0100)
commitdd345a31bfdec350d2593e6de5964e55c7f19c76
tree339720e05aa58887cd2384ed0ee3df57ae7bdf0dtree | snapshot
parent5673444821406dda5fc25e4b52aca419f8065a19commit | diff
serial: mxs-auart: Fix out-of-bounds access through serial port index

The auart_port[] array is indexed using a value derived from the
"serialN" alias in DT, or from platform data, which may lead to an
out-of-bounds access.

Fix this by adding a range check.

Fixes: 1ea6607d4cdc9179 ("serial: mxs-auart: Allow device tree probing")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/mxs-auart.c diff | blob | history
John Crispins staging tree