RHSA-2026:34508

Vulnerability from csaf_opensuse - Published: 2026-07-01 00:00 - Updated: 2026-09-16 18:34
Summary
security update for dnsmasq
Severity
Important
Notes
Title of the patch: security update for dnsmasq
Description of the patch: This security update provides a functional equivalent of RHSA-2026:34508. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2026:34508.
Patchnames: RHSA-2026:34508
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Liberty Linux 9:dnsmasq-2.85-17.el9_6.1.x86_64
Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:dnsmasq-utils-2.85-17.el9_6.1.x86_64
Vendor Fix
Threats
Impact important
Affected products
Recommended 2 products, the same list as for CVE-2026-2291
Threats
Impact important
Affected products
Recommended 2 products, the same list as for CVE-2026-2291
Threats
Impact moderate
Affected products
Recommended 2 products, the same list as for CVE-2026-2291
Threats
Impact important
Affected products
Recommended 2 products, the same list as for CVE-2026-2291
Threats
Impact moderate

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          "product_id": "SUSE Liberty Linux 9:dnsmasq-2.85-17.el9_6.1.x86_64"
        },
        "product_reference": "dnsmasq-2.85-17.el9_6.1.x86_64",
        "relates_to_product_reference": "SUSE Liberty Linux 9"
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  "vulnerabilities": [
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      "cve": "CVE-2026-2291",
      "ids": [
        {
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          "text": "https://www.suse.com/security/cve/CVE-2026-2291"
        }
      ],
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        {
          "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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          "SUSE Liberty Linux 9:dnsmasq-2.85-17.el9_6.1.x86_64",
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        ]
      },
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        {
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        }
      ],
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            "SUSE Liberty Linux 9:dnsmasq-2.85-17.el9_6.1.x86_64",
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          ]
        }
      ],
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          ]
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          "date": "2026-07-01T00:00:00Z",
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      ],
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        {
          "category": "general",
          "text": "A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.",
          "title": "CVE description"
        }
      ],
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          "url": "https://www.suse.com/security/cve/CVE-2026-4890"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1265001 for CVE-2026-4890",
          "url": "https://bugzilla.suse.com/1265001"
        }
      ],
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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",
          "product_ids": [
            "SUSE Liberty Linux 9:dnsmasq-2.85-17.el9_6.1.x86_64",
            "SUSE Liberty Linux 9:dnsmasq-utils-2.85-17.el9_6.1.x86_64"
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
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        {
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        }
      ],
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        {
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          "summary": "SUSE Bug 1265002 for CVE-2026-4891",
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          ]
        }
      ],
      "scores": [
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          "text": "An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.",
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    }
  ]
}



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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

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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.
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  • 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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