Commit a0692f0e authored May 07, 2019 by Yingjoe Chen Committed by Wolfram Sang May 27, 2019

i2c: dev: fix potential memory leak in i2cdev_ioctl_rdwr



If I2C_M_RECV_LEN check failed, msgs[i].buf allocated by memdup_user
will not be freed. Pump index up so it will be freed.

Fixes: 838bfa60 ("i2c-dev: Add support for I2C_M_RECV_LEN")
Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

parent cd6c84d8

drivers/i2c/i2c-dev.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -283,6 +283,7 @@ static noinline int i2cdev_ioctl_rdwr(struct i2c_client *client,
		msgs[i].len < 1 \|\| msgs[i].buf[0] < 1 \|\|
		msgs[i].len < msgs[i].buf[0] +
		I2C_SMBUS_BLOCK_MAX) {
		i++;
		res = -EINVAL;
		break;
		}

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