{
  "cveId": "CVE-2022-2928",
  "url": "https://patchblox.com/security/cve/CVE-2022-2928",
  "summary": "CVE-2022-2928 is fixed in 12 products on 1 platform, first by isc-dhcp-client 4.3.5-3ubuntu7.4, released October 4, 2022. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "dhcp-client: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get t...",
  "description": "The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network.\n\nSecurity Fix(es):\n\n* dhcp: option refcount overflow when leasequery is enabled leading to dhcpd abort (CVE-2022-2928)\n\n* dhcp: DHCP memory leak (CVE-2022-2929)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes linked from the References section.",
  "published": "2022-10-04T17:00:00Z",
  "severity": "Moderate",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00711,
  "epssPercentile": 0.53831,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "RHSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "RHEL 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "RHSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "almalinux 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ALSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "almalinux 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ALSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ELSA-2023-3000",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-3000",
      "released": "2023-05-24T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-client",
      "release": "ol 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ELSA-2023-2502",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-2502",
      "released": "2023-05-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "RHSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "RHEL 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "RHSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "almalinux 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ALSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "almalinux 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ALSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ELSA-2023-3000",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-3000",
      "released": "2023-05-24T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-common",
      "release": "ol 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ELSA-2023-2502",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-2502",
      "released": "2023-05-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-libs",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "RHSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-libs",
      "release": "almalinux 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ALSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-libs",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ELSA-2023-3000",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-3000",
      "released": "2023-05-24T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "RHSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "RHEL 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "RHSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "almalinux 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ALSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "almalinux 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ALSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ELSA-2023-3000",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-3000",
      "released": "2023-05-24T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-relay",
      "release": "ol 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ELSA-2023-2502",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-2502",
      "released": "2023-05-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "RHEL 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "RHSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "RHEL 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "RHSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "almalinux 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ALSA-2023:3000",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-3000",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "almalinux 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ALSA-2023:2502",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-2502",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "ol 8",
      "fixedVersion": "12:4.3.6-49.el8",
      "fix": "ELSA-2023-3000",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-3000",
      "released": "2023-05-24T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "dhcp-server",
      "release": "ol 9",
      "fixedVersion": "12:4.4.2-18.b1.el9",
      "fix": "ELSA-2023-2502",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-2502",
      "released": "2023-05-15T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp",
      "release": "Debian 11.6 (bullseye)",
      "fixedVersion": "4.4.1-2.3\u002Bdeb11u1",
      "fix": "DSA-5251-1",
      "url": "https://patchblox.com/security/fix/linux/dsa-5251-1",
      "released": "2022-10-06T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.4.3-2.1",
      "fix": "DEBIAN-CVE-2022-2928",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-2928",
      "released": "2022-10-07T05:15:08Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.4.3-2.1",
      "fix": "DEBIAN-CVE-2022-2928",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-2928",
      "released": "2022-10-07T05:15:08Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.4",
      "fix": "isc-dhcp-client 4.3.5-3ubuntu7.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-client-4.3.5-3ubuntu7.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.4",
      "fix": "isc-dhcp-client 4.4.1-2.1ubuntu5.20.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-client-4.4.1-2.1ubuntu5.20.04.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.4.1-2.3ubuntu2.3",
      "fix": "isc-dhcp-client 4.4.1-2.3ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-isc-dhcp-client-4.4.1-2.3ubuntu2.3",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client-ddns",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.4",
      "fix": "isc-dhcp-client-ddns 4.3.5-3ubuntu7.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-client-ddns-4.3.5-3ubuntu7.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client-ddns",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.4",
      "fix": "isc-dhcp-client-ddns 4.4.1-2.1ubuntu5.20.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-client-ddns-4.4.1-2.1ubuntu5.20.04.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-client-ddns",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.4.1-2.3ubuntu2.3",
      "fix": "isc-dhcp-client-ddns 4.4.1-2.3ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-isc-dhcp-client-ddns-4.4.1-2.3ubuntu2.3",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-common",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.4",
      "fix": "isc-dhcp-common 4.3.5-3ubuntu7.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-common-4.3.5-3ubuntu7.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-common",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.4",
      "fix": "isc-dhcp-common 4.4.1-2.1ubuntu5.20.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-common-4.4.1-2.1ubuntu5.20.04.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-common",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.4.1-2.3ubuntu2.3",
      "fix": "isc-dhcp-common 4.4.1-2.3ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-isc-dhcp-common-4.4.1-2.3ubuntu2.3",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-relay",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.4",
      "fix": "isc-dhcp-relay 4.3.5-3ubuntu7.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-relay-4.3.5-3ubuntu7.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-relay",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.4",
      "fix": "isc-dhcp-relay 4.4.1-2.1ubuntu5.20.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-relay-4.4.1-2.1ubuntu5.20.04.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-relay",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.4.1-2.3ubuntu2.3",
      "fix": "isc-dhcp-relay 4.4.1-2.3ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-isc-dhcp-relay-4.4.1-2.3ubuntu2.3",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.4",
      "fix": "isc-dhcp-server 4.3.5-3ubuntu7.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-server-4.3.5-3ubuntu7.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.4",
      "fix": "isc-dhcp-server 4.4.1-2.1ubuntu5.20.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-server-4.4.1-2.1ubuntu5.20.04.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.4.1-2.3ubuntu2.3",
      "fix": "isc-dhcp-server 4.4.1-2.3ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-isc-dhcp-server-4.4.1-2.3ubuntu2.3",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server-ldap",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.3.5-3ubuntu7.4",
      "fix": "isc-dhcp-server-ldap 4.3.5-3ubuntu7.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-isc-dhcp-server-ldap-4.3.5-3ubuntu7.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server-ldap",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.4.1-2.1ubuntu5.20.04.4",
      "fix": "isc-dhcp-server-ldap 4.4.1-2.1ubuntu5.20.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-isc-dhcp-server-ldap-4.4.1-2.1ubuntu5.20.04.4",
      "released": "2022-10-04T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "isc-dhcp-server-ldap",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.4.1-2.3ubuntu2.3",
      "fix": "isc-dhcp-server-ldap 4.4.1-2.3ubuntu2.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-isc-dhcp-server-ldap-4.4.1-2.3ubuntu2.3",
      "released": "2022-10-04T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}