That's correct albeit confusing behavior. The source package name is always linux-source-x.y.0 regardless of the actual (upstream) kernel version that it provides. If you really need upstream version 6.5.0 you need to install a specific/old version (6.5.0-5.5 in this case) of linux-source-6.5.0. But those early versions are pretty much development versions and prone to have issues...
If you care about upstream kernel versions you should use the git repo [1] rather than the linux-source-x.y.0 packages. [1] https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/mantic ** Changed in: linux-hwe-6.5 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2063376 Title: linux-source-6.5.0 will install kernel 6.5.13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2063376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs