{ "document": { "aggregate_severity": { "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" }, { "category": "details", "text": "CVE-2021-3468: handle termination event on avahi Unix socket to prevent\n infinite loop\n- CVE-2023-1981: prevent avahi daemon crash by emitting an error if the requested D-Bus\n service is not found\n- CVE-2021-3502: fix avahi-daemon crashing from NULL pointer assertions\n- CVE-2023-38469: reject overly long TXT resource records to prevent reachable assertion\n in avahi_dns_packet_append_record\n- CVE-2023-38470: ensure each label is at least one byte long in avahi_normalize_name()\n to prevent reachable assertion in avahi_escape_label()\n- CVE-2023-38471: fix creating invalid escape sequence in dbus_set_host_name function\n- CVE-2023-38472: ensure avahi_rdata_parse() has valid rdata before parsing to prevent\n reachable assertion\n- CVE-2023-38473: normalize input in avahi_alternative_host_name() to prevent\n reachable assertion due to unescaped dot handling", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2025/clsa-2025_1743675732.json" }, { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2025:1743675732", "url": "https://cve.tuxcare.com/els/releases/CLSA-2025:1743675732" } ], "tracking": { "current_release_date": "2026-02-16T09:18:15Z", "generator": { "date": "2026-02-16T09:18:15Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2025:1743675732", "initial_release_date": "2025-04-03T10:22:15Z", "revision_history": [ { "date": "2025-04-03T10:22:15Z", "number": "1", "summary": "Initial version" }, { "date": "2025-05-19T15:35:43Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-02-16T09:18:15Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "avahi: Fix of 8 CVEs" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.2", "product": { "name": "AlmaLinux 9.2", "product_id": "AlmaLinux-9.2", "product_identification_helper": { "cpe": "cpe:2.3:o:almalinux:almalinux:9.2:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "AlmaLinux" } ], "category": "vendor", "name": "AlmaLinux OS Foundation" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "product": { "name": "avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "product_id": "avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/avahi@0.8-12.el9_2.1.tuxcare.els1?arch=i686" } } }, { "category": "product_version", "name": 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A reachable assertion exists in the avahi_escape_label() function.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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"https://lists.debian.org/debian-lts-announce/2024/12/msg00011.html", "url": "https://lists.debian.org/debian-lts-announce/2024/12/msg00011.html" } ], "release_date": "2023-11-02T15:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2025-04-03T10:22:15Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2025:1743675732", "product_ids": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", 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"https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html", "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html" } ], "release_date": "2021-06-02T16:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2025-04-03T10:22:15Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2025:1743675732", "product_ids": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", 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"availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", 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https://cve.tuxcare.com/els/releases/CLSA-2025:1743675732", "product_ids": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-libdns_sd-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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"https://lists.debian.org/debian-lts-announce/2024/12/msg00011.html", "url": "https://lists.debian.org/debian-lts-announce/2024/12/msg00011.html" } ], "release_date": "2023-11-02T16:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2025-04-03T10:22:15Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2025:1743675732", "product_ids": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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"https://lists.debian.org/debian-lts-announce/2024/12/msg00011.html", "url": "https://lists.debian.org/debian-lts-announce/2024/12/msg00011.html" } ], "release_date": "2023-11-02T15:15:00Z", "remediations": [ { "category": "vendor_fix", "date": "2025-04-03T10:22:15Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2025:1743675732", "product_ids": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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This flaw allows an unprivileged user to make a dbus call, causing the avahi daemon to crash.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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A reachable assertion exists in the avahi_rdata_parse() function.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-autoipd-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.i686", "AlmaLinux-9.2:avahi-compat-howl-devel-0:0.8-12.el9_2.1.tuxcare.els1.x86_64", "AlmaLinux-9.2:avahi-compat-libdns_sd-0:0.8-12.el9_2.1.tuxcare.els1.i686", 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