diff options
| author | Chia-chi Yeh <chiachi@android.com> | 2011-07-15 15:32:57 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2012-04-09 13:57:57 -0700 |
| commit | eadc1fbfc5884abb3fc286f51c008dcab01ca77a (patch) | |
| tree | 5f034757dd56638e5fe3d26e9ae305450a440a4d | |
| parent | 21ab85041397399bb66b6d228d6bae470137cc51 (diff) | |
net: Only NET_ADMIN is allowed to fully control TUN interfaces.
Signed-off-by: Chia-chi Yeh <chiachi@android.com>
| -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 bb8c72c79c6..2391dae6c05 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1252,6 +1252,12 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, int vnet_hdr_sz; int ret; +#ifdef CONFIG_ANDROID_PARANOID_NETWORK + if (cmd != TUNGETIFF && !capable(CAP_NET_ADMIN)) { + return -EPERM; + } +#endif + if (cmd == TUNSETIFF || _IOC_TYPE(cmd) == 0x89) if (copy_from_user(&ifr, argp, ifreq_len)) return -EFAULT; |