{ "document": { "aggregate_severity": { "text": "Critical" }, "category": "csaf_vex", "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" } ], "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/amazonlinux2els/vex/2026/cve-2026-40468-els_os-amazonlinux2els.json" } ], "tracking": { "current_release_date": "2026-07-17T06:06:38Z", "generator": { "date": "2026-07-17T06:06:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-40468-ELS_OS-AMAZONLINUX2ELS", "initial_release_date": "2026-07-13T13:16:00Z", "revision_history": [ { "date": "2026-07-13T13:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-07-17T06:06:38Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2026-40468" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Amazon Linux 2", "product": { "name": "Amazon Linux 2", "product_id": "Amazon-Linux-2", "product_identification_helper": { "cpe": "cpe:2.3:o:amazon:amazon_linux:2:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Amazon Linux" }, { "branches": [ { "category": "product_version", "name": "gawk-0:4.0.2-4.amzn2.1.3.x86_64", "product": { "name": "gawk-0:4.0.2-4.amzn2.1.3.x86_64", "product_id": "gawk-0:4.0.2-4.amzn2.1.3.x86_64", "product_identification_helper": { "purl": "pkg:rpm/amazon%20linux/gawk@4.0.2-4.amzn2.1.3?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "Amazon Web Services, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64", "product": { "name": "gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64", "product_id": "gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/gawk@4.0.2-4.amzn2.1.3.tuxcare.els1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64 as a component of Amazon Linux 2", "product_id": "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64" }, "product_reference": "gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64", "relates_to_product_reference": "Amazon-Linux-2" }, { "category": "default_component_of", "full_product_name": { "name": "gawk-0:4.0.2-4.amzn2.1.3.x86_64 as a component of Amazon Linux 2", "product_id": "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.x86_64" }, "product_reference": "gawk-0:4.0.2-4.amzn2.1.3.x86_64", "relates_to_product_reference": "Amazon-Linux-2" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-40468", "cwe": { "id": "CWE-190", "name": "Integer Overflow or Wraparound" }, "notes": [ { "category": "description", "text": "Integer overflow vulnerability has been found in \"builtin.c\" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects gawk in versions 5.4.0 and below.", "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": [ "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64" ], "known_affected": [ "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-40468" }, { "category": "external", "summary": "https://cert.pl/en/posts/2026/07/CVE-2026-40467", "url": "https://cert.pl/en/posts/2026/07/CVE-2026-40467" }, { "category": "external", "summary": "https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7", "url": "https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7" } ], "release_date": "2026-07-13T13:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-07-17T06:05:41.292379Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1784268336", "product_ids": [ "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1784268336" }, { "category": "none_available", "date": "2026-07-13T13:16:00Z", "details": "Affected", "product_ids": [ "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "version": "3.1" }, "products": [ "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.tuxcare.els1.x86_64", "Amazon-Linux-2:gawk-0:4.0.2-4.amzn2.1.3.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Critical" } ] } ] }