An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.
www.openwall.com/lists/oss-security/2021/08/31/2
github.com/openstack/neutron
github.com/openstack/neutron/commit/df891f0593d234e01f27d7c0376d9702e178ecfb
launchpad.net/bugs/1939733
lists.debian.org/debian-lts-announce/2021/10/msg00005.html
lists.debian.org/debian-lts-announce/2022/05/msg00038.html
nvd.nist.gov/vuln/detail/CVE-2021-40085
security.openstack.org/ossa/OSSA-2021-005.html
www.debian.org/security/2021/dsa-4983