CVE catalog

CVE-2022-0934

dnsmasq: CVE-2022-0934

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Apr 3, 2022, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.64% · Oct 25, 2026

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.

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	dnsmasq	sid	`2.93-3`	fixed
Debian	dnsmasq	forky	`2.93-3`	fixed
Debian	dnsmasq	trixie	`2.91-1+deb13u2`	fixed
Debian	dnsmasq	trixie-security	`2.91-1+deb13u1`	fixed
Debian	dnsmasq	bookworm	`2.90-4~deb12u2`	fixed
Debian	dnsmasq	bookworm-security	`2.90-4~deb12u2`	fixed
Ubuntu	dnsmasq	pro	`2.75-1`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.1`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.2`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.3`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.4`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.5`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.7`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.8`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.10`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.10+esm1`	fixed
Ubuntu	dnsmasq	18.04	`2.78-1`	vulnerable
Ubuntu	dnsmasq	18.04	`2.78-3`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.2`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.3`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.4`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.5`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.6`	fixed
Ubuntu	dnsmasq	20.04	`2.80-1ubuntu2`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1ubuntu4`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.2`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.3`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.4`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.5`	fixed
Ubuntu	dnsmasq	22.04	`2.85-1ubuntu2`	vulnerable
Ubuntu	dnsmasq	22.04	`2.86-1.1`	vulnerable
Ubuntu	dnsmasq	22.04	`2.86-1.1ubuntu0.1`	fixed
Suse	dnsmasq	linux enterprise module for basesystem 15 sp3	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise high performance computing 15 sp1-espos	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise high performance computing 15 sp1-ltss	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise high performance computing 15 sp2-espos	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise high performance computing 15 sp2-ltss	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise real time 15 sp2	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise server 15 sp1-bcl	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise server 15 sp1-ltss	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise server 15 sp2-bcl	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise server 15 sp2-ltss	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise server for sap applications 15 sp1	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise server for sap applications 15 sp2	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	manager proxy 4.1	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	manager retail branch server 4.1	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	manager server 4.1	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise micro 5.0	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise micro 5.1	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	linux enterprise micro 5.2	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	enterprise storage 6	`2.86-150100.7.20.1`	fixed
Suse	dnsmasq	enterprise storage 7	`2.86-150100.7.20.1`	fixed
Opensuse	dnsmasq	leap 15.3	`2.86-150100.7.20.1`	fixed
Ubuntu	dnsmasq	pro	`2.75-1`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.1`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.2`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.3`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.4`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.5`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.7`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.8`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.10`	vulnerable
Ubuntu	dnsmasq	pro	`2.75-1ubuntu0.16.04.10+esm1`	fixed
Ubuntu	dnsmasq	18.04	`2.78-1`	vulnerable
Ubuntu	dnsmasq	18.04	`2.78-3`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.2`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.3`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.4`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.5`	vulnerable
Ubuntu	dnsmasq	18.04	`2.79-1ubuntu0.6`	fixed
Ubuntu	dnsmasq	20.04	`2.80-1ubuntu2`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1ubuntu4`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.2`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.3`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.4`	vulnerable
Ubuntu	dnsmasq	20.04	`2.80-1.1ubuntu1.5`	fixed
Ubuntu	dnsmasq	22.04	`2.85-1ubuntu2`	vulnerable
Ubuntu	dnsmasq	22.04	`2.86-1.1`	vulnerable
Ubuntu	dnsmasq	22.04	`2.86-1.1ubuntu0.1`	fixed
Opensuse	dnsmasq	tumbleweed	`2.86-4.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	dnsmasq	source	sid	`2.87-1`	not yet assigned	Not reported	[1014715]
Debian	dnsmasq	source	forky	`2.87-1`	not yet assigned	Not reported	[1014715]
Debian	dnsmasq	source	trixie	`2.87-1`	not yet assigned	Not reported	[1014715]
Debian	dnsmasq	source	bookworm	`2.87-1`	not yet assigned	Not reported	[1014715]
Ubuntu	dnsmasq	deb	pro	`2.75-1ubuntu0.16.04.10+esm1`	Not reported	USN-5408-1	Not reported
Ubuntu	dnsmasq	deb	18.04	`2.79-1ubuntu0.6`	Not reported	USN-5408-1	Not reported
Ubuntu	dnsmasq	deb	20.04	`2.80-1.1ubuntu1.5`	Not reported	USN-5408-1	Not reported
Ubuntu	dnsmasq	deb	22.04	`2.86-1.1ubuntu0.1`	Not reported	USN-5408-1	Not reported
Suse	dnsmasq	rpm	linux enterprise module for basesystem 15 sp3	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise high performance computing 15 sp1-espos	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise high performance computing 15 sp1-ltss	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise high performance computing 15 sp2-espos	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise high performance computing 15 sp2-ltss	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise real time 15 sp2	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise server 15 sp1-bcl	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise server 15 sp1-ltss	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise server 15 sp2-bcl	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise server 15 sp2-ltss	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise server for sap applications 15 sp1	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise server for sap applications 15 sp2	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	manager proxy 4.1	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	manager retail branch server 4.1	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	manager server 4.1	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise micro 5.0	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise micro 5.1	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	linux enterprise micro 5.2	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	enterprise storage 6	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Suse	dnsmasq	rpm	enterprise storage 7	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Opensuse	dnsmasq	rpm	leap 15.3	`2.86-150100.7.20.1`	Not reported	SUSE-SU-2022:1307-1	Not reported
Ubuntu	dnsmasq	deb	pro	`2.75-1ubuntu0.16.04.10+esm1`	Not reported	UBUNTU-CVE-2022-0934	Not reported
Ubuntu	dnsmasq	deb	18.04	`2.79-1ubuntu0.6`	Not reported	UBUNTU-CVE-2022-0934	Not reported
Ubuntu	dnsmasq	deb	20.04	`2.80-1.1ubuntu1.5`	Not reported	UBUNTU-CVE-2022-0934	Not reported
Ubuntu	dnsmasq	deb	22.04	`2.86-1.1ubuntu0.1`	Not reported	UBUNTU-CVE-2022-0934	Not reported
Opensuse	dnsmasq	rpm	tumbleweed	`2.86-4.1`	Not reported	OPENSUSE-SU-2024:11998-1	Not reported

[Debian bug #1014715]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[dnsmasq]Unknown
Details (4)
- 2.90-4~deb12u2 · all · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · all · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · all · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · all · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
[dnsmasq-base]Unknown
Source package: [dnsmasq]
Details (4)
- 2.90-4~deb12u2 · amd64 · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · arm64 · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
[dnsmasq-base-lua]Unknown
Source package: [dnsmasq]
Details (4)
- 2.90-4~deb12u2 · amd64 · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · arm64 · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
[dnsmasq-utils]Unknown
Source package: [dnsmasq]
Details (4)
- 2.90-4~deb12u2 · amd64 · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · arm64 · bookworm
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm
- 2.90-4~deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 2.87-1
  dsa · dnsmasq · debian · bookworm

[openSUSE Tumbleweed]

[dnsmasq]Unknown
Source package: [dnsmasq]
Details (1)
- 2.93-2.3 · x86_64 · tumbleweed
  Fixed · Fixed: 2.86-4.1
  dsa · dnsmasq · opensuse · tumbleweed
[dnsmasq-utils]Unknown
Source package: [dnsmasq]
Details (1)
- 2.93-2.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.86-4.1
  Version impact unknown
  dsa · dnsmasq · opensuse · tumbleweed

Observed: Oct 23, 2026, 6:22:34 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]