The pcpu_embed_first_chunk function in mm/percpu.c in the Linux kernel through 4.14.14 allows local users to obtain sensitive address information by reading dmesg data from a "pages/cpu" printk call.
https://github.com/johnsonwangqize/cve-linux/blob/master/CVE-2018-5995.md
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html