{ "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-2026-98831-els_os-amazonlinux2els.json" } ], "tracking": { "current_release_date": "2026-11-07T21:45:35Z", "generator": { "date": "2026-11-07T21:45:35Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-98831-ELS_OS-AMAZONLINUX2ELS", "initial_release_date": "2026-10-18T16:17:00Z", "revision_history": [ { "date": "2026-10-18T16:17:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-11-07T21:45:35Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security 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"vulnerabilities": [ { "cve": "CVE-2026-98831", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: don't leak fragment references when changeset init fails\n\ninit_overlay_changeset() stores the number of initialized fragments\nin ovcs->count only on full success. When find_target() or the\n__symbols__ lookup fails partway through, the target and overlay\nreferences taken for the fragments initialized so far are never\ndropped: free_overlay_changeset() bounds its cleanup loop by\novcs->count, which is still 0.\n\nStore the running count on the error path so free_overlay_changeset()\nputs whatever was set up. The store is guarded by ovcs->fragments\nbecause on the allocation-failure path cnt still holds the counting\npass total while there is no fragments array; everywhere else cnt\nonly counts fully-initialized fragments.", "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", 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URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-98831" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/1d62f0f2bc7edb12ed09f71203df0e47fa4efca4", "url": "https://git.kernel.org/stable/c/1d62f0f2bc7edb12ed09f71203df0e47fa4efca4" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3a23fb158ba517b77a2e5258263bdfdaa480f758", "url": "https://git.kernel.org/stable/c/3a23fb158ba517b77a2e5258263bdfdaa480f758" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/64517aeaa3d8b158e4d01321a095be48cb551251", "url": "https://git.kernel.org/stable/c/64517aeaa3d8b158e4d01321a095be48cb551251" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/702b5db6e7b3865be70675d57d6fd7dde80d02b6", "url": "https://git.kernel.org/stable/c/702b5db6e7b3865be70675d57d6fd7dde80d02b6" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/7a46f1917b320cc8762183b802301da02a191b6a", "url": "https://git.kernel.org/stable/c/7a46f1917b320cc8762183b802301da02a191b6a" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/894573e2fdaeb1b15030b7eebc22615edf28a6cd", "url": "https://git.kernel.org/stable/c/894573e2fdaeb1b15030b7eebc22615edf28a6cd" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/bbe3dc64b28a14bd9ecb514bbf5115ac8472ed80", "url": "https://git.kernel.org/stable/c/bbe3dc64b28a14bd9ecb514bbf5115ac8472ed80" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c654f283d7db20648a5bbf979209f78d4fa9be3f", "url": "https://git.kernel.org/stable/c/c654f283d7db20648a5bbf979209f78d4fa9be3f" } ], "release_date": "2026-10-18T16:17:00Z", "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", "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" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1793883221" }, { "category": "none_available", "date": "2026-10-18T16:17:00Z", "details": "Affected", "product_ids": [ "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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