diff options
| -rw-r--r-- | drivers/net/macvtap.c | 2 | ||||
| -rw-r--r-- | drivers/net/tun.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 91120f0ed98c..d058c35b4985 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -1047,6 +1047,8 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd, case TUNSETSNDBUF: if (get_user(u, up)) return -EFAULT; + if (u <= 0) + return -EINVAL; q->sk.sk_sndbuf = u; return 0; diff --git a/drivers/net/tun.c b/drivers/net/tun.c index a4685a22f665..cd0fbf9b0a22 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2054,6 +2054,10 @@ 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); |