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[PW_SID:972285] i2c: busses: Fix out-of-bounds bug in mchp_corei2c_smbus_xfer #535

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[PW_SID:972285] i2c: busses: Fix out-of-bounds bug in mchp_corei2c_smbus_xfer #535

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2 changes: 2 additions & 0 deletions drivers/i2c/busses/i2c-microchip-corei2c.c
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Original file line number Diff line number Diff line change
Expand Up @@ -492,6 +492,8 @@ static int mchp_corei2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned
if (read_write == I2C_SMBUS_WRITE) {
int data_len;

if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX)
return -EINVAL;
data_len = data->block[0];
msgs[CORE_I2C_SMBUS_MSG_WR].len = data_len + 2;
for (int i = 0; i <= data_len; i++)
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