As marcosdumay said upthread, “Systemd has a historic of refusing to fill CVEs, even for incredibly bad vulnerabilities.”
This contributes to the low rate of CVEs in systemd relative to Linux (for which many less-important bugs get CVEs).
Re:Linux distros without systemd
by the_why_of_y on Monday May 20, 2019 @05:51PM
(#19965649)
A quick look at the list of CVEs in the grandparent comment indicates that there are at least 3 different Assigning CNAs for systemd CVEs: MITRE Corporation, Red Hat, Inc. and Canonical Ltd.
My conclusion is that the systemd project is not its own CNA and therefore not in a position to authoritatively decide which systemd bugs get CVE numbers assigned and which do not.
https://www.cvedetails.com/product/47/Linux-Linux-Kernel.htm... https://www.cvedetails.com/vulnerability-list/vendor_id-7971...
So far in 2019, the gap has narrowed: "only" 45 CVEs so far for the Linux kernel, and 7 for systemd.