CVE & CISA-KEV Catalog

CVE-2022-0934

HIGHEPSS 71th pctl
7.5
CVSS v3
NVD

Description

A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.

How to fix

Remediation Available
dnsmasqDebian
Fixed in:2.85-1+deb11u1CVE-2022-0934
Fixed in:2.87-1CVE-2022-0934
Fixed in:2.87-1CVE-2022-0934
Fixed in:2.87-1CVE-2022-0934
dnsmasqRed Hat / RHEL
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasqRocky
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-debuginfoRocky
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-debuginfoRed Hat / RHEL
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-debugsourceRed Hat / RHEL
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-debugsourceRocky
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-utilsRocky
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-utilsRed Hat / RHEL
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-utils-debuginfoRocky
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasq-utils-debuginfoRed Hat / RHEL
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
Fixed in:0:2.79-21.el8_6.5RHSA-2024:1545
dnsmasqUbuntu
Fixed in:2.68-1ubuntu0.2+esm1USN-5408-1
Fixed in:2.75-1ubuntu0.16.04.10+esm1USN-5408-1
Fixed in:2.79-1ubuntu0.6USN-5408-1
Fixed in:2.80-1.1ubuntu1.5USN-5408-1
Fixed in:2.86-1.1ubuntu0.1USN-5408-1
dnsmasq-baseUbuntu
Fixed in:2.68-1ubuntu0.2+esm1USN-5408-1
Fixed in:2.75-1ubuntu0.16.04.10+esm1USN-5408-1
Fixed in:2.79-1ubuntu0.6USN-5408-1
Fixed in:2.80-1.1ubuntu1.5USN-5408-1
Fixed in:2.86-1.1ubuntu0.1USN-5408-1
dnsmasq-utilsUbuntu
Fixed in:2.68-1ubuntu0.2+esm1USN-5408-1
Fixed in:2.75-1ubuntu0.16.04.10+esm1USN-5408-1
Fixed in:2.79-1ubuntu0.6USN-5408-1
Fixed in:2.80-1.1ubuntu1.5USN-5408-1
Fixed in:2.86-1.1ubuntu0.1USN-5408-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.49%probability of exploitation in 30 days
71stpercentile

Elevated risk: more likely to be exploited than 71% of all known CVEs.

References

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2019-0708Critical9.8100%KEV + Ransom-
CVE-2021-31166Critical9.8100%KEVFix
CVE-2015-5119Critical9.899%KEV-
CVE-2010-3962High8.197%KEV-
CVE-2015-0313Critical9.896%KEVFix
CVE-2017-9798High7.595%-Fix
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CVE-2022-0934 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.