I've just run chkrootkit on my laptop running Ubuntu 18.04 LTS, and everything is in the clear except the following:
Searching for suspicious files and dirs, it may take a while... The following suspicious files and directories were found: /usr/lib/jvm/.java-1.11.0-openjdk-amd64.jinfo /usr/lib/debug/.build-id /usr/lib/rstudio/www/.gitignore /usr/lib/rstudio/resources/templates/.gitignore /lib/modules/5.0.0-27-generic/vdso/.build-id /lib/modules/5.0.0-29-generic/vdso/.build-id /usr/lib/debug/.build-id /lib/modules/5.0.0-27-generic/vdso/.build-id /lib/modules/5.0.0-29-generic/vdso/.build-id
Are any or all of these warnings false positives? I have done a fairly thorough search for each warning and come up empty. Any help would be much appreciated.