🛡️ CVE-2022-0934 — dnsmasq

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-416 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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 this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2022-0934 is classified as CWE-416: Use After Free. Memory is used after being released, so its contents may already belong to something else.

Affected software

CVE-2022-0934 is recorded against 2 packages.

  • dnsmasq (fixed in 2.87)
  • enterprise-linux

Timeline and source

Published on 29 August 2022 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

access.redhat.com
bugzilla.redhat.com
lists.thekelleys.org.uk
thekelleys.org.uk
access.redhat.com
bugzilla.redhat.com
lists.debian.org
lists.thekelleys.org.uk
thekelleys.org.uk

CVE-2022-0934 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-416
Public Exploit ✅ No
Source NVD
Published 2022-08-29
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
dnsmasq 2.87
enterprise-linux

References

Issue Tracking, Patch, Third Party Advisory https://bugzilla.redhat.com/show_bug.cgi?id=2057075
Issue Tracking, Patch, Third Party Advisory https://bugzilla.redhat.com/show_bug.cgi?id=2057075

Similar Threats

Site Security Check

Is dnsmasq part of your stack?

CVE-2022-0934 is rated CVSS 7.5 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.