You can report profiles with inaccurate information, by filing a formal complaint through this form.

Note: It should be used ONLY to report false profile information (e.g. false educational qualifications, experience). To report a fake profile, a hacked account, or a scam, you may click on the relevant link below:

Reporting a fake profile

Reporting a hacked account[ 

Reporting scams

Once the said form is submitted, it will be reviewed by LinkedIn Trust and Safety team. Saving a copy of it for your reference is appropriate.

If you believe the claim was submitted in error or if you contest the removal of the allegedly infringing, inaccurate, or unlawful content, you may submit a Counter-Notice.

Important Note: Any assertions made by you in submitting this form are under penalty of perjury.

Source: https://www.linkedin.com/help/linkedin/answer/30200/reporting-inaccurate-information-on-another-member-s-profile?lang=en