As far as I know all the older Ubuntu-releases are affected because of a serious security-glitch in the older Sun/Oracle-packages. I do think the older Linux Mint releases too because they all are using the Java-packages from the Ubuntu-repository. Now Ubuntu is folding back the whole issue for older releases too and will replace the older (insecure) packages with empty 'dummy' packages. Please find the attachment enclosed:
Will all of the Ubuntu-based Linux Mint-releases be affected too? Will all of the Java-packages to be replaced manually? Who knows the answer?