[PATCH 1/9] serial: arc_uart: Fix out-of-bounds access through DT alias
From: geert@linux-m68k.org (Geert Uytterhoeven)
Date: 2018-02-20 10:50:16
Also in:
linux-devicetree, linux-renesas-soc, linux-serial, lkml
On Tue, Feb 20, 2018 at 10:40 AM, Geert Uytterhoeven [off-list ref] wrote:
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: 10640deb04b7949a ("serial: arc_uart: Fix out-of-bounds access through DT alias")
Fixes: ea28fd56fcde69af ("serial/arc-uart: switch to devicetree based probing")
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds