{ "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-2026-98490-els_os-amazonlinux2els.json" } ], "tracking": { "current_release_date": "2026-11-07T21:45:53Z", "generator": { "date": "2026-11-07T21:45:53Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-98490-ELS_OS-AMAZONLINUX2ELS", "initial_release_date": "2026-10-18T16:16:00Z", "revision_history": [ { "date": "2026-10-18T16:16:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-11-07T21:45:53Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security 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"vulnerabilities": [ { "cve": "CVE-2026-98490", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: conntrack: fix helper UAF due to extensions realloc\n\nWhile calling the helpers, a raw pointer to the extensions area is\nwired into expectations list:\n\n -> nf_ct_helper()\n -> helper->help()\n -> nf_ct_expect_related_report()\n -> nf_ct_expect_insert()\n -> hlist_add_head_rcu(&exp->lnode, &master_help->expectations)\n\nIn case the connection is not confirmed yet, more extensions can be\nadded afterwards with *_ext_add() calls reallocating the extension\nspace and leaving the now invalid pointer in the expectations list\nthat is later accessed while removing the expectation.\n\nMake sure that helpers are called at the end after all the other\nextensions are already added.\n\nNote that the helper rejection now leaves the mark and labels set,\nbut that's not different from how the NAT was handled before or how\nthe mark and the labels were handled on confirmation failure. And\nthere are no atomicity guarantees provided by the API anyway.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Amazon-Linux-2:bpftool-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:kernel-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:kernel-devel-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:kernel-headers-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:kernel-tools-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:kernel-tools-devel-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:perf-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:python-perf-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64" ], "known_affected": [ "Amazon-Linux-2:bpftool-0:5.10.259-258.1046.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:bpftool-0:5.10.259-258.1046.amzn2.tuxcare.els2.x86_64", "Amazon-Linux-2:bpftool-0:5.10.272-271.1109.amzn2.tuxcare.els1.x86_64", 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"external", "summary": "https://git.kernel.org/stable/c/18866dc1f525f9ee4de7709529d1ae1af8d8e8be", "url": "https://git.kernel.org/stable/c/18866dc1f525f9ee4de7709529d1ae1af8d8e8be" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/1a4151e6be57b098b7a5ebfbde58585e83200cdc", "url": "https://git.kernel.org/stable/c/1a4151e6be57b098b7a5ebfbde58585e83200cdc" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/5f23080a625dd7855ab91485c8d691a54a1979f0", "url": "https://git.kernel.org/stable/c/5f23080a625dd7855ab91485c8d691a54a1979f0" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/84d47a83b7b717576de0defab46b8823a22853b0", "url": "https://git.kernel.org/stable/c/84d47a83b7b717576de0defab46b8823a22853b0" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9f308197395c1a524b736e401cbc8a2ed7d246c9", "url": "https://git.kernel.org/stable/c/9f308197395c1a524b736e401cbc8a2ed7d246c9" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/afcf362625190c5260530b1d6c7daa98831f6b83", "url": "https://git.kernel.org/stable/c/afcf362625190c5260530b1d6c7daa98831f6b83" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/e02a83bb0b7a203f6a22f55ad5f426765560f811", "url": "https://git.kernel.org/stable/c/e02a83bb0b7a203f6a22f55ad5f426765560f811" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/f53d13a286fb275bda0efdf445b8a1e4dfcb717b", "url": "https://git.kernel.org/stable/c/f53d13a286fb275bda0efdf445b8a1e4dfcb717b" } ], "release_date": "2026-10-18T16:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-11-05T12:53:42.499096Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1793883221", "product_ids": [ "Amazon-Linux-2:bpftool-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", "Amazon-Linux-2:kernel-0:5.10.273-274.1999.amzn2.tuxcare.els1.x86_64", 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