diff options
Diffstat (limited to 'net/ipv4/nexthop.c')
| -rw-r--r-- | net/ipv4/nexthop.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c index 563f71bcb2d7..c97069e79981 100644 --- a/net/ipv4/nexthop.c +++ b/net/ipv4/nexthop.c @@ -402,7 +402,7 @@ static int nh_check_attr_group(struct net *net, struct nlattr *tb[], struct nexthop_grp *nhg; unsigned int i, j; - if (len & (sizeof(struct nexthop_grp) - 1)) { + if (!len || len & (sizeof(struct nexthop_grp) - 1)) { NL_SET_ERR_MSG(extack, "Invalid length for nexthop group attribute"); return -EINVAL; @@ -1104,6 +1104,9 @@ static struct nexthop *nexthop_create_group(struct net *net, struct nexthop *nh; int i; + if (WARN_ON(!num_nh)) + return ERR_PTR(-EINVAL); + nh = nexthop_alloc(); if (!nh) return ERR_PTR(-ENOMEM); |