4.14-stable review patch. If anyone has any objections, please let me know.
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From: Geert Uytterhoeven geert+renesas@glider.be
commit 325501d9360eb42c7c51e6daa0d733844c1e790b upstream.
The hs_timing_cfg[] array is indexed using a value derived from the "mshcN" alias in DT, which may lead to an out-of-bounds access.
Fix this by adding a range check.
Fixes: 361c7fe9b02eee7e ("mmc: dw_mmc-k3: add sd support for hi3660") Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Shawn Lin shawn.lin@rock-chips.com Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/mmc/host/dw_mmc-k3.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/mmc/host/dw_mmc-k3.c +++ b/drivers/mmc/host/dw_mmc-k3.c @@ -135,6 +135,9 @@ static int dw_mci_hi6220_parse_dt(struct if (priv->ctrl_id < 0) priv->ctrl_id = 0;
+ if (priv->ctrl_id >= TIMING_MODE) + return -EINVAL; + host->priv = priv; return 0; }