diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/tap.c | 2 | ||||
| -rw-r--r-- | drivers/net/tun.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/tap.c b/drivers/net/tap.c index 1b10fcc6a58d..6c0c84c33e1f 100644 --- a/drivers/net/tap.c +++ b/drivers/net/tap.c @@ -1032,6 +1032,8 @@ static long tap_ioctl(struct file *file, unsigned int cmd, case TUNSETSNDBUF: if (get_user(s, sp)) return -EFAULT; + if (s <= 0) + return -EINVAL; q->sk.sk_sndbuf = s; return 0; diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 5550f56cb895..42bb820a56c9 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2429,6 +2429,10 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, ret = -EFAULT; break; } + if (sndbuf <= 0) { + ret = -EINVAL; + break; + } tun->sndbuf = sndbuf; tun_set_sndbuf(tun); |