[PATCH 6/9] serial: samsung: Fix out-of-bounds access through DT alias
From: geert@linux-m68k.org (Geert Uytterhoeven)
Date: 2018-02-20 10:52:46
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 s3c24xx_serial_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_SAMSUNG_UARTS), so this can even be triggered using a
legitimate DTB.
Fixes: 3ac337e76a1c637b ("serial: samsung: Fix out-of-bounds access through DT alias")
Fixes: 13a9f6c64fdc55eb ("serial: samsung: Consider DT alias when probing po
rts")
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