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| author | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2016-06-16 08:27:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-25 22:50:53 +0200 |
| commit | 926b7b5122c96e1f18cd20e85a286c7ec8d18c97 (patch) | |
| tree | 982d6a4394b0da84a4b7682459f412355fc38cd0 /drivers/tty/amiserial.c | |
| parent | serial: samsung: Fix ERR pointer dereference on deferred probe (diff) | |
| download | linux-926b7b5122c96e1f18cd20e85a286c7ec8d18c97.tar.xz linux-926b7b5122c96e1f18cd20e85a286c7ec8d18c97.zip | |
serial: samsung: Fix possible out of bounds access on non-DT platform
On non-DeviceTree platforms, the index of serial device is a static
variable incremented on each probe. It is incremented even if deferred
probe happens when getting the clock in s3c24xx_serial_init_port().
This index is used for referencing elements of statically allocated
s3c24xx_serial_ports array. In case of re-probe, the index will point
outside of this array leading to memory corruption.
Increment the index only on successful probe.
Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Fixes: b497549a035c ("[ARM] S3C24XX: Split serial driver into core and per-cpu drivers")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/amiserial.c')
0 files changed, 0 insertions, 0 deletions