SUSE-SU-2026:1351-1

Vulnerability from csaf_suse - Published: 2026-04-15 13:36 - Updated: 2026-04-15 13:36
Summary
Security update for bind
Severity
Important
Notes
Title of the patch: Security update for bind
Description of the patch: This update for bind fixes the following issues: Security issues: - CVE-2026-1519: maliciously crafted DNSSEC-validated zone can lead to denial of service (bsc#1260805). - CVE-2026-3104: memory leak in code preparing DNSSEC proofs of non-existence allows for DoS (bsc#1260567). - CVE-2026-3119: authenticated queries containing a TKEY record may cause `named` to terminate unexpectedly (bsc#1260568). - CVE-2026-3591: stack use-after-return flaw in SIG(0) handling code allows for ACL bypass (bsc#1260569). - use-after-free error in `dns_client_resolve()` triggered by a DNAME response (bsc#1259202). Upgrade to release 9.20.21 Security Fixes: * Fix unbounded NSEC3 iterations when validating referrals to unsigned delegations. (CVE-2026-1519) [bsc#1260805] * Fix memory leaks in code preparing DNSSEC proofs of non-existence. (CVE-2026-3104) [bsc#1260567] * Prevent a crash in code processing queries containing a TKEY record. (CVE-2026-3119) [bsc#1260568] * Fix a stack use-after-return flaw in SIG(0) handling code. (CVE-2026-3591) [bsc#1260569] * Fix a use-after-free error in dns_client_resolve() triggered by a DNAME response. This issue only affected the delv tool and it has now been fixed. [bsc#1259202] Feature Changes: * Record query time for all dnstap responses. * Optimize TCP source port selection on Linux. Bug Fixes: * Fix the handling of key statements defined inside views. * Fix an assertion failure triggered by non-minimal IXFRs. * Fix a crash when retrying a NOTIFY over TCP. * Fetch loop detection improvements. * Randomize nameserver selection. * Fix dnstap logging of forwarded queries. * A stale answer could have been served in case of multiple upstream failures when following CNAME chains. This has been fixed. * Fail DNSKEY validation when supported but invalid DS is found. * Importing an invalid SKR file might corrupt stack memory. * Return FORMERR for queries with the EDNS Client Subnet FAMILY field set to 0. * Fix inbound IXFR performance regression. * Make catalog zone names and member zones' entry names case-insensitive. * Fix implementation of BRID and HHIT record types. * Fix implementation of DSYNC record type. * Fix response policy and catalog zones to work with $INCLUDE directive.
Patchnames: SUSE-2026-1351,SUSE-SLE-Module-Basesystem-15-SP7-2026-1351,SUSE-SLE-Module-Server-Applications-15-SP7-2026-1351
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-2026-1519
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-3104
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-3119
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-3591
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
To clipboard 

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          "text": "If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries).\nThis issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.",
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            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "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": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-15T13:36:44Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-1519"
    },
    {
      "cve": "CVE-2026-3104",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-3104"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.\nBIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-3104",
          "url": "https://www.suse.com/security/cve/CVE-2026-3104"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1260567 for CVE-2026-3104",
          "url": "https://bugzilla.suse.com/1260567"
        }
      ],
      "remediations": [
        {
          "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 Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "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": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-15T13:36:44Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-3104"
    },
    {
      "cve": "CVE-2026-3119",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-3119"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the `named` configuration.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.\nBIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-3119",
          "url": "https://www.suse.com/security/cve/CVE-2026-3119"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1260568 for CVE-2026-3119",
          "url": "https://bugzilla.suse.com/1260568"
        }
      ],
      "remediations": [
        {
          "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 Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-15T13:36:44Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-3119"
    },
    {
      "cve": "CVE-2026-3591",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-3591"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A use-after-return vulnerability exists in the `named` server when handling DNS queries signed with SIG(0). Using a specially-crafted DNS request, an attacker may be able to cause an ACL to improperly (mis)match an IP address. In a default-allow ACL (denying only specific IP addresses), this may lead to unauthorized access. Default-deny ACLs should fail-secure.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1.\nBIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
          "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
          "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-3591",
          "url": "https://www.suse.com/security/cve/CVE-2026-3591"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1260569 for CVE-2026-3591",
          "url": "https://bugzilla.suse.com/1260569"
        }
      ],
      "remediations": [
        {
          "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 Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Basesystem 15 SP7:bind-utils-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.aarch64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.ppc64le",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.s390x",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-9.20.21-150700.3.18.1.x86_64",
            "SUSE Linux Enterprise Module for Server Applications 15 SP7:bind-doc-9.20.21-150700.3.18.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-15T13:36:44Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-3591"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.