{ "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-2026-99008-els_os-amazonlinux2els.json" } ], "tracking": { "current_release_date": "2026-11-07T21:43:16Z", "generator": { "date": "2026-11-07T21:43:16Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2026-99008-ELS_OS-AMAZONLINUX2ELS", "initial_release_date": "2026-10-23T13:17:00Z", "revision_history": [ { "date": "2026-10-23T13:17:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-11-07T21:43:16Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security 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"vulnerabilities": [ { "cve": "CVE-2026-99008", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: RFCOMM: Fix NULL tty_dev dereference in rfcomm_dev_shutdown\n\nsyzbot hit a NULL pointer dereference in rfcomm_dev_shutdown() when an\nRFCOMM tty is closed.\n\nrfcomm_dev_add() puts the new device on rfcomm_dev_list first and only\nthen registers the tty device and saves it in dev->tty_dev. If that\nregistration fails, dev->tty_dev is never set at all. The device can be\nlooked up in the meantime, so an open() of /dev/rfcommN gets through\nrfcomm_tty_install() and attaches to it. When that tty is closed again,\nrfcomm_dev_shutdown() uses dev->tty_dev without checking it:\n\n Oops: general protection fault, probably for non-canonical address\n KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]\n RIP: 0010:rfcomm_dev_shutdown+0x48/0xb0 net/bluetooth/rfcomm/tty.c:131\n Call Trace:\n tty_port_shutdown+0x1bf/0x220 drivers/tty/tty_port.c:372\n tty_port_close+0x4e/0x150 drivers/tty/tty_port.c:705\n tty_release+0x359/0x1670 drivers/tty/tty_io.c:1718\n __fput+0x418/0xa50 fs/file_table.c:512\n\nrfcomm_dev_destruct() already copes with a NULL dev->tty_dev. Add the\nsame check to rfcomm_dev_shutdown(), so the tty device is only moved\nwhen it was actually registered.", "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", 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"external", "summary": "https://git.kernel.org/stable/c/08e90633377f1b2567ab5ad6810b74c552246a07", "url": "https://git.kernel.org/stable/c/08e90633377f1b2567ab5ad6810b74c552246a07" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3f6394f6c6d1b6817065d3b402f55d437063a704", "url": "https://git.kernel.org/stable/c/3f6394f6c6d1b6817065d3b402f55d437063a704" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3fd5164bdb04635caa7942ddb554b0ec699a9433", "url": "https://git.kernel.org/stable/c/3fd5164bdb04635caa7942ddb554b0ec699a9433" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a43452d8c1015ac2f0e43ff946be5425427b02cc", "url": "https://git.kernel.org/stable/c/a43452d8c1015ac2f0e43ff946be5425427b02cc" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/a661f401f83b8462f2d424e0a1a72b7681e92ea2", "url": "https://git.kernel.org/stable/c/a661f401f83b8462f2d424e0a1a72b7681e92ea2" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b2b915042be073637d9f93dc51ef15fc0685ae8a", "url": "https://git.kernel.org/stable/c/b2b915042be073637d9f93dc51ef15fc0685ae8a" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/d0aef0b0374678153244f162df507106d728af39", "url": "https://git.kernel.org/stable/c/d0aef0b0374678153244f162df507106d728af39" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/d5c372ad03330f02962d4860df4d355ab25487df", "url": "https://git.kernel.org/stable/c/d5c372ad03330f02962d4860df4d355ab25487df" } ], "release_date": "2026-10-23T13:17:00Z", "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": "2026-10-23T13:17:00Z", "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", "Amazon-Linux-2:bpftool-0:5.10.272-271.1109.amzn2.tuxcare.els2.x86_64", "Amazon-Linux-2:bpftool-0:5.10.273-274.1999.amzn2.x86_64", 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