If it's the email address of the person, then they clearly just emailed you directly. The from address will be xxx@linkedin.com in that case. Truesorry for the stupid question, but i'm not sure even after googling because all i get is warnings about phishing scams that aren't exactly related.
I would suggest all of you to forward the email to phishing@linkedin.com so that we hammer this all down together. To help maintain the security of your account, we temporarily locked it due to unusal activity. I just figured i would make sure you ruled out that.
Be civil to one another (no name calling or insults). I'm worried that this is a bigger issue where someone might have access to my email, but i've since. Usually i get one or two. Any and all permitted crawling of linkedin is subject to linkedin's.
No personal information (including last names, phone numbers, etc). Or get linkedin's attention to solve this issue. This subreddit is not maintained nor run by linkedin proper. This is a place to share and discuss your use or the management of company's use on linkedin.
A reminder of the rules in r/scams.