Oracle has just released Oracle Critical Patch Update for July 2023 : https://www.oracle.com/security-alerts/cpujul2023.html

Interesting part when you apply the RU (Release Update) (implicit re-linking of the database binaries happen) which impacts extjob binary executable ownership and permission.

so, after patching its highly recommended that your run root.sh script again (either through sudo or ask your OS admin to run it)

As shown below the executable is now owned by root with 4750 permission

I hope this helps.