Message ID | 20190508220208.26146-1-colin.king@canonical.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | nbd: add null check on dev_list to avoid potential null pointer dereference | expand |
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 053958a8a2ba..ed263963e778 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -2117,6 +2117,10 @@ static int nbd_genl_status(struct sk_buff *skb, struct genl_info *info) } dev_list = nla_nest_start_noflag(reply, NBD_ATTR_DEVICE_LIST); + if (!dev_list) { + nlmsg_free(reply); + goto out; + } if (index == -1) { ret = idr_for_each(&nbd_index_idr, &status_cb, reply); if (ret) {