Resource allocation without limits in dnsmasq
Priority LOW 23CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 9 fixed, 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-770.
Summary
A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.
Why it matters now
EPSS 0.02652 85th percentileScored 2026-11-07
Fix Partial dnsmasq (The Dnsmasq Project): 2.81Red Hat: 2 advisoriesRed Hat: 9 fixed, 5 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| The Dnsmasq Project | dnsmasq | before 2.81 | 2.81 | Patch available | CNA |
- dnsmasq VendorThe Dnsmasq Project Affected before 2.81 Fixed in 2.81 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* | before 2.81 | Vulnerable | Thekelleys |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 31 | Vulnerable | Fedoraproject |
- cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* Versions before 2.81 Vulnerable ·Thekelleys
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
Remediation
- Fix · CNA dnsmasq (The Dnsmasq Project) Fixed in 2.81
Red Hat 2 advisories
- RHSA-2020:3878 Released 2020-09-29 · Red Hat rating Lowdnsmasq security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) dnsmasq-2.76-16.el7
- Red Hat Enterprise Linux Client Optional (v. 7) dnsmasq-utils-2.76-16.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) dnsmasq-2.76-16.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) dnsmasq-utils-2.76-16.el7
- Red Hat Enterprise Linux Server (v. 7) dnsmasq-2.76-16.el7
- Red Hat Enterprise Linux Server Optional (v. 7) dnsmasq-utils-2.76-16.el7
- Red Hat Enterprise Linux Workstation (v. 7) dnsmasq-2.76-16.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) dnsmasq-utils-2.76-16.el7
- RHSA-2020:1715 Released 2020-04-28 · Red Hat rating Lowdnsmasq security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) dnsmasq-2.79-11.el8, dnsmasq-utils-2.79-11.el8
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 10 (Newton) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 14 (Rocky) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:1715 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:3878 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:3878 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2020:3878 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:3878 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:3878 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:3878 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:3878 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:3878 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-14834
- 2026-10-03 Alias added: GHSA-rwmq-3523-q2pg
References
Sources
- CVE-2019-14834 · CVE Program
- CVE-2019-14834 · NVD
- FIRST EPSS
- GHSA-rwmq-3523-q2pg · GitHub Advisory Database · CC BY 4.0
- CVE-2019-14834 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences