DEBIAN-CVE-2026-12725

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Source
https://security-tracker.debian.org/tracker/CVE-2026-12725
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12725.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-12725
Upstream
  • CVE-2026-12725
Published
2026-06-22T16:16:34Z
Modified
2026-09-14T17:01:53Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A heap-based buffer overflow was found in dnsmasq. When DNSSEC validation and query logging are both enabled, logging of DS or DNSKEY replies containing unsupported algorithm or digest types can cause dnsmasq to write past the end of an internal logging buffer. A remote attacker able to supply such a DNS response may crash the dnsmasq process, resulting in denial of service.

References

Affected packages

Debian:12 / dnsmasq

Package

Name
dnsmasq
Purl
pkg:deb/debian/dnsmasq?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.89-1
2.90-1
2.90-2
2.90-3
2.90-4~deb12u1
2.90-4~deb12u2
2.90-4
2.90-5
2.90-6
2.90-7
2.91~test6-1
2.91~test9-1
2.91-1
2.92~rc1-1
2.92~rc3-1
2.92-1~exp1
2.92-1
2.92-1+exp1
2.92-2
2.92-3
2.92-4
2.92-5
2.93-1
2.93-2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12725.json"

Debian:13 / dnsmasq

Package

Name
dnsmasq
Purl
pkg:deb/debian/dnsmasq?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.91-1+deb13u2

Affected versions

2.*
2.91-1
2.91-1+deb13u1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12725.json"

Debian:14 / dnsmasq

Package

Name
dnsmasq
Purl
pkg:deb/debian/dnsmasq?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.93-1

Affected versions

2.*
2.91-1
2.92~rc1-1
2.92~rc3-1
2.92-1~exp1
2.92-1
2.92-1+exp1
2.92-2
2.92-3
2.92-4
2.92-5

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12725.json"