Vulnerability-Lookup

SUSE-SU-2026:22668-1

Vulnerability from csaf_suse - Published: 2026-07-09 07:33 - Updated: 2026-09-16 20:04

Summary

Security update for dnsmasq

Severity

Moderate

Notes

Title of the patch: Security update for dnsmasq

Description of the patch: This update for dnsmasq fixes the following issues - CVE-2026-12969: out-of-bounds read in `find_soa()` due to missing extrabytes validation (bsc#1268882).

Patchnames: SUSE-SLE-Micro-6.1-612

CVE-2026-12969

6.5 (Medium)


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

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_2.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_2.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_2.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_2.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-security-upd…	self
https://bugzilla.suse.com/1268882	self
https://www.suse.com/security/cve/CVE-2026-12969/	self
https://www.suse.com/security/cve/CVE-2026-12969	external
https://bugzilla.suse.com/1268882	external

JSON

To clipboard

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}

CVE-2026-12969 (GCVE-0-2026-12969)

Vulnerability from cvelistv5 – Published: 2026-06-23 13:28 – Updated: 2026-08-31 11:48

Title

Dnsmasq: dnsmasq: out-of-bounds read in find_soa() due to missing extrabytes validation

Summary

An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-23 15:02 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

redhat redhat root

References

2 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-12969	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2491663	issue-trackingx_refsource_REDHAT

Impacted products

6 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2026-05-10 00:00

Credits

Red Hat would like to thank dolitli for reporting this issue.

Show details on NVD website

JSON

To clipboard

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    "assignerShortName": "redhat",
    "cveId": "CVE-2026-12969",
    "datePublished": "2026-06-23T13:28:56.732Z",
    "dateReserved": "2026-06-23T09:25:06.270Z",
    "dateUpdated": "2026-08-31T11:48:30.188Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

SUSE-SU-2026:22668-1

CVE-2026-12969 (GCVE-0-2026-12969)

Tags

Sightings

Nomenclature

Related by attack behaviour