https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2019-6474.htmlhttps://patchthecve.com/cve/CVE-2019-6474.htmlWed, 17 Jun 2026 02:39:06 +0000MEDIUM 5.7: A missing check on incoming client requests can be exploited to cause a situation where the Kea server's lease storage contains leases which are rejected as invalid when the server tries to load leases from storage on restart. If the number of such leases exceeds a hard-coded limit in the Kea code, https://patchthecve.com/cve/CVE-2019-6473.htmlhttps://patchthecve.com/cve/CVE-2019-6473.htmlWed, 17 Jun 2026 02:39:06 +0000MEDIUM 6.5: An invalid hostname option can trigger an assertion failure in the Kea DHCPv4 server process (kea-dhcp4), causing the server process to exit. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.https://patchthecve.com/cve/CVE-2019-6472.htmlhttps://patchthecve.com/cve/CVE-2019-6472.htmlWed, 17 Jun 2026 02:39:06 +0000MEDIUM 6.5: A packet containing a malformed DUID can cause the Kea DHCPv6 server process (kea-dhcp6) to exit due to an assertion failure. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.https://patchthecve.com/cve/CVE-2018-5739.htmlhttps://patchthecve.com/cve/CVE-2018-5739.htmlWed, 17 Jun 2026 02:00:41 +0000MEDIUM 6.5: An extension to hooks capabilities which debuted in Kea 1.4.0 introduced a memory leak for operators who are using certain hooks library facilities. In order to support multiple requests simultaneously, Kea 1.4 added a callout handle store but unfortunately the initial implementation of this store d