An information disclosure vulnerability exists in the way Azure WaLinuxAgent creates swap files on resource disks, aka 'Azure Linux Agent Information Disclosure Vulnerability'.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0804
https://access.redhat.com/errata/RHSA-2019:1527
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00037.html