Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 809a8d87 authored by Patrick Daly's avatar Patrick Daly Committed by Banajit Goswami
Browse files

ASoC: wcd9xxx: Fix unprotected userspace access 



Protect against memory faults while accessing userspace addresses.

Change-Id: I1433bac73d24d428749558e530e6869c2e5ee98f
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent c3b02802

sound/soc/codecs/wcdcal-hwdep.c

+2 −1
Original line number Diff line number Diff line
@@ -82,7 +82,8 @@ static int wcdcal_hwdep_ioctl_shared(struct snd_hwdep *hw, 
		return -EFAULT;

	}

	data = fw[fw_user.cal_type]->data;

	memcpy(data, fw_user.buffer, fw_user.size);

	if (copy_from_user(data, fw_user.buffer, fw_user.size))

		return -EFAULT;

	fw[fw_user.cal_type]->size = fw_user.size;

	mutex_lock(&fw_data->lock);

	set_bit(WCDCAL_RECIEVED, &fw_data->wcdcal_state[fw_user.cal_type]);