diff options
Diffstat (limited to 'net/netlink/genetlink.c')
| -rw-r--r-- | net/netlink/genetlink.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 57010927e20a..7c136de117eb 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -757,6 +757,9 @@ static int genl_family_rcv_msg(const struct genl_family *family, if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) return -EINVAL; + if (hdr->cmd >= family->resv_start_op && hdr->reserved) + return -EINVAL; + if (genl_get_cmd(hdr->cmd, family, &op)) return -EOPNOTSUPP; @@ -1348,6 +1351,7 @@ static struct genl_family genl_ctrl __ro_after_init = { .module = THIS_MODULE, .ops = genl_ctrl_ops, .n_ops = ARRAY_SIZE(genl_ctrl_ops), + .resv_start_op = CTRL_CMD_GETPOLICY + 1, .mcgrps = genl_ctrl_groups, .n_mcgrps = ARRAY_SIZE(genl_ctrl_groups), .id = GENL_ID_CTRL, @@ -1362,7 +1366,7 @@ static int genl_bind(struct net *net, int group) unsigned int id; int ret = 0; - genl_lock_all(); + down_read(&cb_lock); idr_for_each_entry(&genl_fam_idr, family, id) { const struct genl_multicast_group *grp; @@ -1383,7 +1387,7 @@ static int genl_bind(struct net *net, int group) break; } - genl_unlock_all(); + up_read(&cb_lock); return ret; } |