diff options
| author | Chia-chi Yeh <chiachi@android.com> | 2011-07-15 15:32:57 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2014-03-19 13:08:35 -0700 |
| commit | c001b9448b3f5dc0fcec1aaa545524057afcaa1e (patch) | |
| tree | ae70cf3c5a8d44e57b54a8f840ba7f99a70ca384 /drivers/net | |
| parent | 40ad8e5a3c56321451476906d4a437076a189294 (diff) | |
net: Only NET_ADMIN is allowed to fully control TUN interfaces.
Signed-off-by: Chia-chi Yeh <chiachi@android.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/tun.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 26f8635b027..ce399514e0b 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1889,6 +1889,12 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, unsigned int ifindex; 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; |