Samba before 4.7.3 might allow remote attackers to obtain sensitive information by leveraging failure of the server to clear allocated heap memory.
https://www.synology.com/support/security/Synology_SA_17_72_Samba
https://www.samba.org/samba/security/CVE-2017-15275.html
https://www.debian.org/security/2017/dsa-4043
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_us
https://security.gentoo.org/glsa/201805-07
https://lists.debian.org/debian-lts-announce/2017/11/msg00029.html
https://access.redhat.com/errata/RHSA-2017:3278
https://access.redhat.com/errata/RHSA-2017:3261
https://access.redhat.com/errata/RHSA-2017:3260
http://www.ubuntu.com/usn/USN-3486-2
http://www.ubuntu.com/usn/USN-3486-1