CVE-2022-2929
DHCP memory leak
02 Description
DHCP memory leak
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.66% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 51.1% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2022-10-07 04:45Z4 YR AGO
- Last updated
- 2024-09-16 18:28Z2 YR AGO
- Reserved
- 2022-08-22
- Assigning CNA
- isc
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770Allocation of Resources Without Limits or ThrottlingBase
- Data version
- 5.1
- Document digest
- eb3ffd1dd130c5f687675eb2961bb5be4b9c40c9dee4a77a0ccb5407abb9f602
05 Affected products
06 References
- kb.isc.orghttps://kb.isc.org/docs/cve-2022-2929
- lists.debian.org[debian-lts-announce] 20221010 [SECURITY] [DLA 3146-1] isc-dhcp security updatehttps://lists.debian.org/debian-lts-announce/2022/10/msg00015.html
- lists.fedoraproject.orgFEDORA-2022-f5a45757dfhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/
- lists.fedoraproject.orgFEDORA-2022-9ca9a94e28https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/
- lists.fedoraproject.orgFEDORA-2022-c4f274a54fhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/
- security.gentoo.orgGLSA-202305-22https://security.gentoo.org/glsa/202305-22
07 Remediation
Upgrade to the patched release most closely related to your current version of ISC DHCP. These can all be downloaded from https://www.isc.org/downloads. 4.4.3-P1 4.1-ESV-R16-P2
08 Fixed in
AlmaLinux 8
- dhcp-client Fixed in 12:4.3.6-49.el8
- dhcp-common Fixed in 12:4.3.6-49.el8
- dhcp-libs Fixed in 12:4.3.6-49.el8
- dhcp-relay Fixed in 12:4.3.6-49.el8
- dhcp-server Fixed in 12:4.3.6-49.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- dhcp-client Fixed in 12:4.4.2-18.b1.el9
- dhcp-common Fixed in 12:4.4.2-18.b1.el9
- dhcp-relay Fixed in 12:4.4.2-18.b1.el9
- dhcp-server Fixed in 12:4.4.2-18.b1.el9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- dhcp-client Fixed in 12:4.3.6-49.el8
- dhcp-common Fixed in 12:4.3.6-49.el8
- dhcp-libs Fixed in 12:4.3.6-49.el8
- dhcp-relay Fixed in 12:4.3.6-49.el8
- dhcp-server Fixed in 12:4.3.6-49.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- dhcp-client Fixed in 12:4.4.2-18.b1.el9
- dhcp-common Fixed in 12:4.4.2-18.b1.el9
- dhcp-relay Fixed in 12:4.4.2-18.b1.el9
- dhcp-server Fixed in 12:4.4.2-18.b1.el9
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- isc-dhcp Fixed in 4.4.3-2.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- isc-dhcp Fixed in 4.4.3-2.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- isc-dhcp Fixed in 4.3.5-3ubuntu7.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- isc-dhcp Fixed in 4.4.1-2.1ubuntu5.20.04.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- isc-dhcp Fixed in 4.4.1-2.3ubuntu2.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- isc-dhcp Fixed in 4.2.4-7ubuntu12.13+esm2Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- isc-dhcp Fixed in 4.3.3-5ubuntu12.10+esm2Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.