Follow those steps:
https://medium.com/@lucas.rj.fernandes/spring-security-with-oauth2-and-linkedin-a20874ae7477
security:
oauth2:
client:
registration:
linkedin:
client-id: ${clientId}
client-secret: ${secretId}
scope: openid, profile, email, w_member_social
redirect-uri: "{baseUrl}/login/oauth2/code/{registrationId}"
client-name: LinkedIn
authorization-grant-type: authorization_code
provider: linkedin
client_authentication_method: client_secret_post
provider:
linkedin:
authorization-uri: https://www.linkedin.com/oauth/v2/authorization
token-uri: https://www.linkedin.com/oauth/v2/accessToken
user-info-uri: https://api.linkedin.com/v2/userinfo
jwk-set-uri: https://www.linkedin.com/oauth/openid/jwks