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Commit b91e23f0 authored by Chia-chi Yeh's avatar Chia-chi Yeh Committed by Amit Pundir
Browse files

net: Only NET_ADMIN is allowed to fully control TUN interfaces. 



Signed-off-by: default avatarChia-chi Yeh <chiachi@android.com>
parent 12cc8400

drivers/net/tun.c

+6 −0
Original line number Diff line number Diff line
@@ -2003,6 +2003,12 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, 
	int le;

	int ret;



#ifdef CONFIG_ANDROID_PARANOID_NETWORK

	if (cmd != TUNGETIFF && !capable(CAP_NET_ADMIN)) {

		return -EPERM;

	}

#endif



	if (cmd == TUNSETIFF || cmd == TUNSETQUEUE || _IOC_TYPE(cmd) == 0x89) {

		if (copy_from_user(&ifr, argp, ifreq_len))

			return -EFAULT;