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| author | Axel Lin <axel.lin@gmail.com> | 2010-10-13 10:44:39 +0800 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2010-10-29 00:30:29 +0200 |
| commit | a8d6aa08dd3e004df6a6e63a61698d834a191ad3 (patch) | |
| tree | aaad867dccdf9d2b7e04c6bd73834882428b5a41 | |
| parent | 7745cc8c3b977203c1b7483c09d05b58c8e88728 (diff) | |
mfd: Fix off-by-one value range checking for tps6507x
If bytes == (TPS6507X_MAX_REGISTER + 1), we have a buffer overflow when
doing memcpy(&msg[1], src, bytes).
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | drivers/mfd/tps6507x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/tps6507x.c b/drivers/mfd/tps6507x.c index fc019764928..33ba7723c96 100644 --- a/drivers/mfd/tps6507x.c +++ b/drivers/mfd/tps6507x.c @@ -68,7 +68,7 @@ static int tps6507x_i2c_write_device(struct tps6507x_dev *tps6507x, char reg, u8 msg[TPS6507X_MAX_REGISTER + 1]; int ret; - if (bytes > (TPS6507X_MAX_REGISTER + 1)) + if (bytes > TPS6507X_MAX_REGISTER) return -EINVAL; msg[0] = reg; |