{ "document": { "aggregate_severity": { "text": "Important" }, "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-2026-33818: unbounded recursion in encoding/asn1 Unmarshal\n- CVE-2026-39820: quadratic string concatenation in net/mail consumeComment\n- CVE-2026-39821: ASCII-only Punycode labels accepted by x/net/idna process()\n- CVE-2026-42499: quadratic string concatenation in net/mail consumePhrase\n- CVE-2026-56853: missing ReadHeaderTimeout in net/http unencrypted HTTP/2 check\n- CVE-2026-56858: XSS via JS regexp context tracking in html/template\n- CVE-2026-56859: unbounded recursion in encoding/xml DecodeElement\n- CVE-2026-56860: quadratic complexity in net/url resolvePath\n- CVE-2026-56862: unlimited post-handshake KeyUpdate messages in crypto/tls\n- Rebuild with golang >= 1.26.7-1.el9_8 for the standard library fixes", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/tuxcare9.8esu/advisories/2026/clsa-2026_1791571565.json" } ], "tracking": { "current_release_date": "2026-10-09T18:48:07Z", "generator": { "date": "2026-10-09T18:48:07Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1791571565", "initial_release_date": "2026-10-09T18:48:07Z", "revision_history": [ { "date": "2026-10-09T18:48:07Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "ignition: Fix of 9 CVEs" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.8", "product": { "name": 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"relates_to_product_reference": "Rocky Linux-9.8" }, { "category": "default_component_of", "full_product_name": { "name": "ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64 as a component of Rocky Linux 9.8", "product_id": "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64" }, "product_reference": "ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "relates_to_product_reference": "Rocky Linux-9.8" }, { "category": "default_component_of", "full_product_name": { "name": "ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64 as a component of Rocky Linux 9.8", "product_id": "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" }, "product_reference": "ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "relates_to_product_reference": "Rocky Linux-9.8" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-56853", "cwe": { "id": "CWE-770", "name": "Allocation of Resources Without Limits or Throttling" }, "notes": [ { "category": "description", "text": "When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-56853" }, { "category": "external", "summary": "https://go.dev/cl/795540", "url": "https://go.dev/cl/795540" }, { "category": "external", "summary": "https://go.dev/issue/80205", "url": "https://go.dev/issue/80205" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/94pEornpRlI", "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI" }, { "category": "external", "summary": "https://pkg.go.dev/vuln/GO-2026-6089", "url": "https://pkg.go.dev/vuln/GO-2026-6089" } ], "release_date": "2026-08-13T22:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-09T18:46:06.702015Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565", "product_ids": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky 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"AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-33818", "cwe": { "id": "CWE-400", "name": "Uncontrolled Resource Consumption" }, "notes": [ { "category": "description", "text": "Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-33818" }, { "category": "external", "summary": "https://go.dev/cl/814980", "url": "https://go.dev/cl/814980" }, { "category": "external", "summary": "https://go.dev/issue/80405", "url": "https://go.dev/issue/80405" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/94pEornpRlI", "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI" }, { "category": "external", "summary": "https://pkg.go.dev/vuln/GO-2026-5972", "url": "https://pkg.go.dev/vuln/GO-2026-5972" } ], "release_date": "2026-08-13T22:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-09T18:46:06.702015Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565", "product_ids": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-56862", "cwe": { "id": "CWE-770", "name": "Allocation of Resources Without Limits or Throttling" }, "notes": [ { "category": "description", "text": "Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-56862" }, { "category": "external", "summary": "https://go.dev/cl/804261", "url": "https://go.dev/cl/804261" }, { "category": "external", "summary": "https://go.dev/issue/80528", "url": "https://go.dev/issue/80528" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/94pEornpRlI", "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI" }, { "category": "external", "summary": "https://pkg.go.dev/vuln/GO-2026-6090", "url": "https://pkg.go.dev/vuln/GO-2026-6090" } ], "release_date": "2026-08-13T22:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-09T18:46:06.702015Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565", "product_ids": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-56860", "cwe": { "id": "CWE-407", "name": "Inefficient Algorithmic Complexity" }, "notes": [ { "category": "description", "text": "Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead. Now, path resolution operates on a byte buffer using index-based backtracking for '..' segments, eliminating the quadratic time complexity and significantly reducing memory allocations.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-56860" }, { "category": "external", "summary": "https://go.dev/cl/803681", "url": "https://go.dev/cl/803681" }, { "category": "external", "summary": "https://go.dev/issue/80494", "url": "https://go.dev/issue/80494" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/94pEornpRlI", "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI" }, { "category": "external", "summary": "https://pkg.go.dev/vuln/GO-2026-6218", "url": "https://pkg.go.dev/vuln/GO-2026-6218" } ], "release_date": "2026-08-13T22:17:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-09T18:46:06.702015Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565", "product_ids": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1791571565" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-39821", "cwe": { "id": "CWE-1289", "name": "Improper Validation of Unsafe Equivalence in Input" }, "notes": [ { "category": "description", "text": "The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode(\"xn--example-.com\") incorrectly returns the name \"example.com\" rather than an error. This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject \"example.com\" but permit \"xn--example-.com\". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name \"example.com\".", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "AlmaLinux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-edge-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-grub-0:2.26.0-1.el9_8.tuxcare.els1.x86_64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.aarch64", "Rocky Linux-9.8:ignition-validate-0:2.26.0-1.el9_8.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-39821" }, { "category": "external", "summary": "https://go.dev/cl/767220", "url": "https://go.dev/cl/767220" }, { "category": "external", "summary": "https://go.dev/issue/78760", "url": "https://go.dev/issue/78760" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/94pEornpRlI", "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8", "url": 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