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In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade dhcp-serverUpgrade dhcp-clientUpgrade dhcp-libsUpgrade dhcp-relayUpgrade dhcp-common | May 15, 2023 | Oct 7, 2022 |
| Alpine Linux | — | Upgrade dhcp | Mar 26, 2024 | Oct 7, 2022 |
| Amazon Linux Ami 2 | — | Upgrade dhcp-debuginfoUpgrade dhcp-develUpgrade dhcpUpgrade dhcp-commonUpgrade dhclientUpgrade dhcp-libs | Nov 10, 2022 | Oct 7, 2022 |
| Centos_linux | — | Upgrade dhcp-relay-debuginfoUpgrade dhcp-clientUpgrade dhcp-server-debuginfoUpgrade dhcp-commonUpgrade dhcp-libsUpgrade dhcp-debuginfoUpgrade dhcp-debugsourceUpgrade dhcp-libs-debuginfoUpgrade dhcp-serverUpgrade dhcp-client-debuginfoUpgrade dhcp-relay | May 15, 2023 | Oct 7, 2022 |
| Debian | — | Upgrade isc-dhcp | Oct 12, 2022 | Oct 7, 2022 |
| Gentoo Linux | — | Upgrade net-misc/dhcp. | May 4, 2023 | Oct 7, 2022 |
| Huawei Euleros 2_0_sp10 | — | Upgrade dhcp | Dec 22, 2022 | Oct 7, 2022 |
| Huawei Euleros 2_0_sp11 | — | Upgrade dhcp | Jan 6, 2023 | Oct 7, 2022 |
| Huawei Euleros 2_0_sp5 | — | Upgrade dhclientUpgrade dhcp-libsUpgrade dhcpUpgrade dhcp-common | Mar 9, 2023 | Oct 7, 2022 |
| Huawei Euleros 2_0_sp8 | — | Upgrade dhcp-clientUpgrade dhcp-serverUpgrade dhcp-relayUpgrade dhcp-libsUpgrade dhcp-common | Dec 9, 2022 | Oct 7, 2022 |
| Huawei Euleros 2_0_sp9 | — | Upgrade dhcp | Jan 9, 2023 | Oct 7, 2022 |
| Oracle_linux | — | Upgrade dhcp-clientUpgrade dhcp-relayUpgrade dhcp-commonUpgrade dhcp-libsUpgrade dhcp-server | May 17, 2023 | Oct 5, 2022 |
| Redhat_linux | — | Upgrade dhcp-clientNo solution existsUpgrade dhcp-relayUpgrade dhcp-relay-debuginfoUpgrade dhcp-serverUpgrade dhcp-commonUpgrade dhcp-client-debuginfoUpgrade dhcp-libs-debuginfoUpgrade dhcp-debuginfoUpgrade dhcp-libsUpgrade dhcp-server-debuginfoUpgrade dhcp-debugsource | May 15, 2023 | Oct 7, 2022 |
| Suse | — | Upgrade dhcp-serverUpgrade dhcpUpgrade dhcp-relayUpgrade dhcp-docUpgrade dhcp-develUpgrade dhcp-client | Nov 16, 2022 | Oct 7, 2022 |
| Ubuntu | — | Upgrade isc-dhcp-client (Ubuntu Pro)Upgrade isc-dhcp-serverUpgrade isc-dhcp-clientUpgrade isc-dhcp-server (Ubuntu Pro) | Oct 6, 2022 | Oct 5, 2022 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Oct 7, 2022 |
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