On Tue, Feb 20, 2018 at 10:40 AM, Geert Uytterhoeven
[off-list ref] wrote:

The sci_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_SH_SCI_NR_UARTS), so this can even be triggered using a
legitimate DTB.

Fixes: f650cdf1c115498e ("serial: sh-sci: Fix out-of-bounds access through DT alias")

Fixes: 97ed9790c514066b ("serial: sh-sci: Remove unused platform data
capabilities field")

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@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