SUSE-SU-2026:1827-1
Vulnerability from csaf_suse - Published: 2026-05-12 09:05 - Updated: 2026-05-12 09:05Summary
Security update for dnsmasq
Severity
Important
Notes
Title of the patch: Security update for dnsmasq
Description of the patch: This update for dnsmasq fixes the following issue:
- CVE-2026-2291: VU#471747: dnsmasq can be abused to record false cached data enabling DoS or attacker redirect
(bsc#1258251).
Patchnames: SUSE-2026-1827,SUSE-SLE-Micro-5.3-2026-1827,SUSE-SLE-Micro-5.4-2026-1827,SUSE-SLE-Micro-5.5-2026-1827,SUSE-SLE-Module-Basesystem-15-SP7-2026-1827,SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1827,SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1827,SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1827,SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1827,SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-1827,SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1827,SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1827,SUSE-SLE-Product-SLES_SAP-15-SP4-2026-1827,SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1827,SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1827,openSUSE-SLE-15.6-2026-1827
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
8.1 (High)
Affected products
Recommended
48 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.3:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.3:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.3:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.4:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.4:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.4:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.5:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.5:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.5:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Micro 5.5:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Module for Basesystem 15 SP7:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP4-LTSS:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP4-LTSS:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP4-LTSS:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP4-LTSS:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP5-LTSS:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP5-LTSS:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP5-LTSS:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP5-LTSS:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP6-LTSS:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP6-LTSS:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP6-LTSS:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server 15 SP6-LTSS:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 15 SP4:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 15 SP4:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 15 SP5:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 15 SP5:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 15 SP6:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: SUSE Linux Enterprise Server for SAP Applications 15 SP6:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-utils-2.90-150400.16.9.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-utils-2.90-150400.16.9.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-utils-2.90-150400.16.9.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.6:dnsmasq-utils-2.90-150400.16.9.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
References
8 references
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{
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],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "dnsmasq-2.90-150400.16.9.1.aarch64 as component of SUSE Linux Enterprise Micro 5.3",
"product_id": "SUSE Linux Enterprise Micro 5.3:dnsmasq-2.90-150400.16.9.1.aarch64"
},
"product_reference": "dnsmasq-2.90-150400.16.9.1.aarch64",
"relates_to_product_reference": "SUSE Linux Enterprise Micro 5.3"
},
{
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"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-2291"
}
],
"notes": [
{
"category": "general",
"text": "dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.",
"title": "CVE description"
}
],
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"references": [
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"category": "external",
"summary": "CVE-2026-2291",
"url": "https://www.suse.com/security/cve/CVE-2026-2291"
},
{
"category": "external",
"summary": "SUSE Bug 1258251 for CVE-2026-2291",
"url": "https://bugzilla.suse.com/1258251"
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{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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"cvss_v3": {
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"threats": [
{
"category": "impact",
"date": "2026-05-12T09:05:52Z",
"details": "important"
}
],
"title": "CVE-2026-2291"
}
]
}
Loading…
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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