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author | Geert Uytterhoeven <geert+renesas@glider.be> | 2018-02-23 14:38:34 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-28 15:30:00 +0100 |
commit | 49ee23b71877831ac087d6083f6f397dc19c9664 (patch) | |
tree | 59d2823142a8f6c3367275f0ecc466ea6aae5442 /drivers/tty/n_r3964.c | |
parent | afc7851fab8329eddcf321c9e0a58c893f351dd6 (diff) | |
download | linux-49ee23b71877831ac087d6083f6f397dc19c9664.tar.bz2 |
serial: samsung: Fix out-of-bounds access through serial port index
The s3c24xx_serial_ports[] array is indexed using a value derived from
the "serialN" alias in DT, or from an incrementing probe index, 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 or legitimate board code.
Fixes: 13a9f6c64fdc55eb ("serial: samsung: Consider DT alias when probing ports")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/n_r3964.c')
0 files changed, 0 insertions, 0 deletions