You can find this bug backported to many 2.6.x kernels, so don't rely on the 3.14 version number.. See my other comment regarding Ubuntu and RHEL https://news.ycombinator.com/item?id=9544272

But i didn't check if there are updated kernels for those versions in Ubuntu.. Atleast for RHEL5.11 it looks to me that the -404 kernel is the latest...