diff options
| author | Chia-chi Yeh <chiachi@android.com> | 2011-07-15 15:32:57 -0700 |
|---|---|---|
| committer | Arve Hjønnevåg <arve@android.com> | 2013-07-01 13:40:37 -0700 |
| commit | f25c23e12ec17e3ec25a4db8bf97901ad891e32d (patch) | |
| tree | cd9799d2299e610c7c680b6b5b52da95a7ee75d1 /drivers/net | |
| parent | 19d2b31c931e7fc8c33ee4d455005bb8e8790274 (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 9c61f8734a4..eb5609bc9e5 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1864,6 +1864,12 @@ 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 || cmd == TUNSETQUEUE || _IOC_TYPE(cmd) == 0x89) { if (copy_from_user(&ifr, argp, ifreq_len)) return -EFAULT; |