SUSE-SU-2026:22454-1

Vulnerability from csaf_suse - Published: 2026-06-30 11:07 - Updated: 2026-06-30 11:07
Summary
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 issues Update to 2.93: - CVE-2026-12725: heap buffer overflow in `log_query()` when logging unsupported DS/DNSKEY replies (bsc#1268764).
Patchnames: SUSE-SLE-Micro-6.1-604
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-12725
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2026-2291
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2026-6507
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64 —
Vendor Fix
Threats
Impact important
References
To clipboard 

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          "text": "https://www.suse.com/security/cve/CVE-2026-12725"
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      ],
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        {
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          "text": "A heap-based buffer overflow was found in dnsmasq. When DNSSEC validation and\nquery logging are both enabled, logging of DS or DNSKEY replies containing\nunsupported algorithm or digest types can cause dnsmasq to write past the end\nof an internal logging buffer. A remote attacker able to supply such a DNS\nresponse may crash the dnsmasq process, resulting in denial of service.",
          "title": "CVE description"
        }
      ],
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          "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x",
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        }
      ],
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          "product_ids": [
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.ppc64le",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x",
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          "date": "2026-06-30T11:07:00Z",
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      "title": "CVE-2026-12725"
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      ],
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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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        {
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          "url": "https://bugzilla.suse.com/1258251"
        }
      ],
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        {
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            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64"
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      ],
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.ppc64le",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64"
          ]
        }
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          "date": "2026-06-30T11:07:00Z",
          "details": "important"
        }
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    },
    {
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          "text": "https://www.suse.com/security/cve/CVE-2026-6507"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).",
          "title": "CVE description"
        }
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          "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x",
          "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64"
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          "url": "https://www.suse.com/security/cve/CVE-2026-6507"
        },
        {
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          "url": "https://bugzilla.suse.com/1262487"
        }
      ],
      "remediations": [
        {
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.ppc64le",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64"
          ]
        }
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        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.ppc64le",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.s390x",
            "SUSE Linux Micro 6.1:dnsmasq-2.93-slfo.1.1_1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-30T11:07:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-6507"
    }
  ]
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.