A flaw was found in samba versions 4.9.x up to 4.9.13, samba 4.10.x up to 4.10.8 and samba 4.11.x up to 4.11.0rc3, when certain parameters were set in the samba configuration file. An unauthenticated attacker could use this flaw to escape the shared directory and access the contents of directories outside the share.
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00045.html
https://access.redhat.com/errata/RHSA-2019:3253
https://access.redhat.com/errata/RHSA-2019:4023
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10197
https://seclists.org/bugtraq/2019/Sep/4
https://security.gentoo.org/glsa/202003-52
https://security.netapp.com/advisory/ntap-20190903-0001/
https://support.f5.com/csp/article/K69511801
https://support.f5.com/csp/article/K69511801?utm_source=f5support&%3Butm_medium=RSS
https://usn.ubuntu.com/4121-1/