CVE catalog

CVE-2022-2928

isc-dhcp: CVE-2022-2928

Severity: Medium · CVSS 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Oct 5, 2022, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.71% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	isc-dhcp	trixie	`4.4.3-P1-8`	fixed
Debian	isc-dhcp	bookworm	`4.4.3-P1-2`	fixed
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu8`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu11`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.2`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.6`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.8`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.12`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.13`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.13+esm1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.2.4-7ubuntu12.13+esm2`	fixed
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu2`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu8`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu11`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.6`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10+esm1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10+esm2`	fixed
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.1-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu2`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu5`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu8`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu11`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.3`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.4`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.6`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.7`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.9`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10+esm1`	vulnerable
Ubuntu	isc-dhcp	pro	`4.3.3-5ubuntu12.10+esm2`	fixed
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu3`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu4`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu5`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu6`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.1`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.3`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.4`	fixed
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu6`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu2`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu3`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu4`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.2`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.3`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.4`	fixed
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu1`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2.1`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2.2`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2.3`	fixed
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu3`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu4`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu5`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu6`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.1`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.2`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.3`	vulnerable
Ubuntu	isc-dhcp	18.04	`4.3.5-3ubuntu7.4`	fixed
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2ubuntu6`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu2`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu3`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu4`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.1`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.2`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.3`	vulnerable
Ubuntu	isc-dhcp	20.04	`4.4.1-2.1ubuntu5.20.04.4`	fixed
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu1`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2.1`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2.2`	vulnerable
Ubuntu	isc-dhcp	22.04	`4.4.1-2.3ubuntu2.3`	fixed
Opensuse	dhcp	tumbleweed	`4.4.2.P1-11.1`	fixed
Suse	dhcp	linux enterprise module for basesystem 15 sp3	`4.3.6.P1-150000.6.17.1`	fixed
Suse	dhcp	linux enterprise module for basesystem 15 sp4	`4.3.6.P1-150000.6.17.1`	fixed
Suse	dhcp	linux enterprise module for server applications 15 sp3	`4.3.6.P1-150000.6.17.1`	fixed
Suse	dhcp	linux enterprise module for server applications 15 sp4	`4.3.6.P1-150000.6.17.1`	fixed
Opensuse	dhcp	leap 15.3	`4.3.6.P1-150000.6.17.1`	fixed
Opensuse	dhcp	leap 15.4	`4.3.6.P1-150000.6.17.1`	fixed
Suse	dhcp	linux enterprise software development kit 12 sp5	`4.3.3-10.28.1`	fixed
Suse	dhcp	linux enterprise server 12 sp5	`4.3.3-10.28.1`	fixed
Suse	dhcp	linux enterprise server for sap applications 12 sp5	`4.3.3-10.28.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	isc-dhcp	source	trixie	`4.4.3-2.1`	not yet assigned	Not reported	[1021320]
Debian	isc-dhcp	source	bookworm	`4.4.3-2.1`	not yet assigned	Not reported	[1021320]
Ubuntu	isc-dhcp	deb	pro	`4.2.4-7ubuntu12.13+esm2`	Not reported	USN-5658-3	Not reported
Ubuntu	isc-dhcp	deb	pro	`4.3.3-5ubuntu12.10+esm2`	Not reported	USN-5658-2	Not reported
Ubuntu	isc-dhcp	deb	pro	`4.3.3-5ubuntu12.10+esm2`	Not reported	UBUNTU-CVE-2022-2928	Not reported
Ubuntu	isc-dhcp	deb	18.04	`4.3.5-3ubuntu7.4`	Not reported	UBUNTU-CVE-2022-2928	Not reported
Ubuntu	isc-dhcp	deb	20.04	`4.4.1-2.1ubuntu5.20.04.4`	Not reported	UBUNTU-CVE-2022-2928	Not reported
Ubuntu	isc-dhcp	deb	22.04	`4.4.1-2.3ubuntu2.3`	Not reported	UBUNTU-CVE-2022-2928	Not reported
Ubuntu	isc-dhcp	deb	18.04	`4.3.5-3ubuntu7.4`	Not reported	USN-5658-1	Not reported
Ubuntu	isc-dhcp	deb	20.04	`4.4.1-2.1ubuntu5.20.04.4`	Not reported	USN-5658-1	Not reported
Ubuntu	isc-dhcp	deb	22.04	`4.4.1-2.3ubuntu2.3`	Not reported	USN-5658-1	Not reported
Opensuse	dhcp	rpm	tumbleweed	`4.4.2.P1-11.1`	Not reported	OPENSUSE-SU-2024:12390-1	Not reported
Suse	dhcp	rpm	linux enterprise module for basesystem 15 sp3	`4.3.6.P1-150000.6.17.1`	Not reported	SUSE-SU-2022:3991-1	Not reported
Suse	dhcp	rpm	linux enterprise module for basesystem 15 sp4	`4.3.6.P1-150000.6.17.1`	Not reported	SUSE-SU-2022:3991-1	Not reported
Suse	dhcp	rpm	linux enterprise module for server applications 15 sp3	`4.3.6.P1-150000.6.17.1`	Not reported	SUSE-SU-2022:3991-1	Not reported
Suse	dhcp	rpm	linux enterprise module for server applications 15 sp4	`4.3.6.P1-150000.6.17.1`	Not reported	SUSE-SU-2022:3991-1	Not reported
Opensuse	dhcp	rpm	leap 15.3	`4.3.6.P1-150000.6.17.1`	Not reported	SUSE-SU-2022:3991-1	Not reported
Opensuse	dhcp	rpm	leap 15.4	`4.3.6.P1-150000.6.17.1`	Not reported	SUSE-SU-2022:3991-1	Not reported
Suse	dhcp	rpm	linux enterprise software development kit 12 sp5	`4.3.3-10.28.1`	Not reported	SUSE-SU-2022:3992-1	Not reported
Suse	dhcp	rpm	linux enterprise server 12 sp5	`4.3.3-10.28.1`	Not reported	SUSE-SU-2022:3992-1	Not reported
Suse	dhcp	rpm	linux enterprise server for sap applications 12 sp5	`4.3.3-10.28.1`	Not reported	SUSE-SU-2022:3992-1	Not reported

[Debian bug #1021320]

OpenFactory catalog packages

[openSUSE Tumbleweed]

[dhcp-client]Unknown
Source package: [dhcp]
Details (1)
- 4.4.3.P1-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 4.4.2.P1-11.1
  Version impact unknown
  dsa · dhcp · opensuse · tumbleweed
[dhcp-devel]Unknown
Source package: [dhcp]
Details (1)
- 4.4.3.P1-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 4.4.2.P1-11.1
  Version impact unknown
  dsa · dhcp · opensuse · tumbleweed
[dhcp-doc]Unknown
Source package: [dhcp]
Details (1)
- 4.4.3.P1-1.2 · noarch · tumbleweed
  Unknown · Fixed: 4.4.2.P1-11.1
  Version impact unknown
  dsa · dhcp · opensuse · tumbleweed
[dhcp-keama]Unknown
Source package: [dhcp]
Details (1)
- 4.4.3.P1-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 4.4.2.P1-11.1
  Version impact unknown
  dsa · dhcp · opensuse · tumbleweed
[dhcp-relay]Unknown
Source package: [dhcp]
Details (1)
- 4.4.3.P1-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 4.4.2.P1-11.1
  Version impact unknown
  dsa · dhcp · opensuse · tumbleweed
[dhcp-server]Unknown
Source package: [dhcp]
Details (1)
- 4.4.3.P1-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 4.4.2.P1-11.1
  Version impact unknown
  dsa · dhcp · opensuse · tumbleweed
[dhcp]Fixed
Source package: [dhcp]
Details (1)
- 4.4.3.P1-1.2 · x86_64 · tumbleweed
  Fixed · Fixed: 4.4.2.P1-11.1
  dsa · dhcp · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[isc-dhcp-client]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
[isc-dhcp-client-ddns]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
[isc-dhcp-common]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
[isc-dhcp-dev]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
[isc-dhcp-relay]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
[isc-dhcp-server]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
[isc-dhcp-server-ldap]Fixed
Source package: [isc-dhcp]
Details (2)
- 4.4.3-P1-2 · amd64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm
- 4.4.3-P1-2 · arm64 · bookworm
  Fixed · Fixed: 4.4.3-2.1
  dsa · isc-dhcp · debian · bookworm

Observed: Oct 23, 2026, 6:26:15 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]