Not all CVEs listed for Linux Kernel

### Current Behavior:
I've been running Dependency-Track v4.5.0 and as a follow-up of https://github.com/DependencyTrack/dependency-track/issues/416, I've added this same component to my project and it still does not find all CVEs (41 only where NIST lists 1'825).

### Steps to Reproduce:
Enter Linux Kernel component with CPE: cpe:2.3:o:linux:linux_kernel:4.4.6:*:*:*:*:*:*:*

41 CVEs listed:

### Expected Behavior:
Number of CVEs reported should be 1'825 (see https://nvd.nist.gov/vuln/search/results?form_type=Advanced&results_type=overview&isCpeNameSearch=true&seach_type=all&query=cpe:2.3:o:linux:linux_kernel:4.4.6:*:*:*:*:*:*:*)

### Environment:

- Dependency-Track Version: 4.5.0
- Distribution: Docker
- BOM Format & Version: N/A
- Database Server: default (as per docker image)
- Browser: Chrome

### Additional Details:

N/A