Debian 10 DLA-3146-1 Critical: isc-dhcp DoS Issue CVE-2022-2928 User Hit

CVE-2022-2928

It was discovered that the DHCP server does not correctly perform
option reference counting when configured with "allow leasequery;".
A remote attacker can take advantage of this flaw to cause a denial
of service (daemon crash).

CVE-2022-2929

It was discovered that the DHCP server is prone to a memory leak
flaw when handling contents of option 81 (fqdn) data received in
a DHCP packet. A remote attacker can take advantage of this flaw
to cause DHCP servers to consume resources, resulting in denial
of service.

For Debian 10 buster, these problems have been fixed in version
4.4.1-2+deb10u2.

We recommend that you upgrade your isc-dhcp packages.

For the detailed security status of isc-dhcp please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/isc-dhcp

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be