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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-02-23 14:38:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-30 07:47:44 +0200 |
| commit | 8bdc529a73b72b7c2b6844d7eeb731b6369548e3 (patch) | |
| tree | 66d864cf7f184ac952446ab78a6cf8cc70b90c26 /lib/string_helpers.c | |
| parent | e70f6af6d7dd1fc2d4c9d7a0e58f69a216faeb0e (diff) | |
serial: arc_uart: Fix out-of-bounds access through DT alias
[ Upstream commit f9f5786987e81d166c60833edcb7d1836aa16944 ]
The arc_uart_ports[] array is indexed using a value derived from the
"serialN" alias in DT, which may lead to an out-of-bounds access.
Fix this by adding a range check.
Note that the array size is defined by a Kconfig symbol
(CONFIG_SERIAL_ARC_NR_PORTS), so this can even be triggered using a
legitimate DTB.
Fixes: ea28fd56fcde69af ("serial/arc-uart: switch to devicetree based probing")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/string_helpers.c')
0 files changed, 0 insertions, 0 deletions