postgresql-10, postgresql-12, postgresql-13 vulnerabilities

It was discovered that the PostgresQL planner could create incorrect plans
in certain circumstances. A remote attacker could use this issue to cause
PostgreSQL to crash, resulting in a denial of service, or possibly obtain
sensitive information from memory. This issue only affected Ubuntu 20.04
LTS and Ubuntu 21.04. (CVE-2021-3677)

It was discovered that PostgreSQL incorrectly handled certain SSL
renegotiation ClientHello messages from clients. A remote attacker could
possibly use this issue to cause PostgreSQL to crash, resulting in a denial
of service. (CVE-2021-3449)