CVE catalog
CVE-2026-13002
A flow has been identified into dnssec.c library, causing an infinite loop to dnsmasq service. An attacker who controls any DNSSEC-signed zone can hang the dnsmasq process with a single crafted respon
- Severity
- Medium · CVSS 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.15% · Oct 25, 2026
A flow has been identified into dnssec.c library, causing an infinite loop to dnsmasq service. An attacker who controls any DNSSEC-signed zone can hang the dnsmasq process with a single crafted response, killing all DNS resolution for its clients.
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 | vulnerable |
| Debian | dnsmasq | forky | 2.93-3 | vulnerable |
| Debian | dnsmasq | trixie | 2.91-1+deb13u2 | vulnerable |
| Debian | dnsmasq | trixie-security | 2.91-1+deb13u1 | vulnerable |
| Debian | dnsmasq | bookworm | 2.90-4~deb12u2 | vulnerable |
| Debian | dnsmasq | bookworm-security | 2.90-4~deb12u2 | vulnerable |
| Cpe | openshift_container_platform | Not reported | Not reported | unknown |
| Cpe | enterprise_linux | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | dnsmasq | source | sid | (unfixed) | not yet assigned | Not reported | [1144649] |
| Debian | dnsmasq | source | forky | (unfixed) | not yet assigned | Not reported | [1144649] |
| Debian | dnsmasq | source | trixie | (unfixed) | not yet assigned | Not reported | [1144649] |
| Debian | dnsmasq | source | bookworm | (unfixed) | not yet assigned | Not reported | [1144649] |
Notes
[trixie] dnsmasq: Minor issue [bookworm] dnsmasq: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [dnsmasq]Affected
Details (4)
2.90-4~deb12u2· all · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· all · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· all · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· all · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
- [dnsmasq-base]Affected
Source package: [dnsmasq]
Details (4)
2.90-4~deb12u2· amd64 · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· arm64 · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· amd64 · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· arm64 · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
- [dnsmasq-base-lua]Affected
Source package: [dnsmasq]
Details (4)
2.90-4~deb12u2· amd64 · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· arm64 · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· amd64 · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· arm64 · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
- [dnsmasq-utils]Affected
Source package: [dnsmasq]
Details (4)
2.90-4~deb12u2· amd64 · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· arm64 · bookwormAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· amd64 · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
2.90-4~deb12u2· arm64 · bookworm-securityAffected
nvd · dnsmasq · debian · bookworm; nvd · dnsmasq · debian · 12
[Debian 13 (Trixie)]
- [dnsmasq]Affected
Details (4)
2.91-1+deb13u1· all · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· all · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· all · trixie-securityAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· all · trixie-securityAffected
nvd · dnsmasq · debian · 13
- [dnsmasq-base]Affected
Source package: [dnsmasq]
Details (4)
2.91-1+deb13u1· amd64 · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· arm64 · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· amd64 · trixie-securityAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· arm64 · trixie-securityAffected
nvd · dnsmasq · debian · 13
- [dnsmasq-base-lua]Affected
Source package: [dnsmasq]
Details (4)
2.91-1+deb13u1· amd64 · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· arm64 · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· amd64 · trixie-securityAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· arm64 · trixie-securityAffected
nvd · dnsmasq · debian · 13
- [dnsmasq-utils]Affected
Source package: [dnsmasq]
Details (4)
2.91-1+deb13u1· amd64 · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· arm64 · trixieAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· amd64 · trixie-securityAffected
nvd · dnsmasq · debian · 13
2.91-1+deb13u1· arm64 · trixie-securityAffected
nvd · dnsmasq · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-13002]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-13002]
- [https://security-tracker.debian.org/tracker/CVE-2026-13002]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-13002.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]