{ "document": { "aggregate_severity": { "text": "Important" }, "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/centos6els/vex/2021/cve-2021-47110-els_os-centos6els.json" } ], "title": "Security update on CVE-2021-47110", "tracking": { "current_release_date": "2025-12-23T20:26:03Z", "generator": { "date": "2025-12-23T20:26:03Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2021-47110-ELS_OS-CENTOS6ELS", "initial_release_date": "2021-01-01T00:00:00Z", "revision_history": [ { "date": "2021-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-07-03T16:26:10Z", "number": "2", "summary": "Official Publication" }, { "date": 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"CentOS-6:kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els23.noarch" }, "product_reference": "kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els23.noarch", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "perf-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:perf-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64" }, "product_reference": "perf-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "relates_to_product_reference": "CentOS-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64 as a component of Community Enterprise Operating System 6", "product_id": "CentOS-6:kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64" }, "product_reference": "kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "relates_to_product_reference": "CentOS-6" } ] }, "vulnerabilities": [ { "cve": "CVE-2021-47110", "cwe": { "id": "CWE-459", "name": "Incomplete Cleanup" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/kvm: Disable kvmclock on all CPUs on shutdown\n\nCurrenly, we disable kvmclock from machine_shutdown() hook and this\nonly happens for boot CPU. We need to disable it for all CPUs to\nguard against memory corruption e.g. on restore from hibernate.\n\nNote, writing '0' to kvmclock MSR doesn't clear memory location, it\njust prevents hypervisor from updating the location so for the short\nwhile after write and while CPU is still alive, the clock remains usable\nand correct so we don't need to switch to some other clocksource.", "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": [ "CentOS-6:kernel-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els23.noarch", "CentOS-6:kernel-debug-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-devel-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els23.i686", "CentOS-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:python-perf-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els23.noarch", "CentOS-6:perf-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2021-47110" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/1df2dc09926f61319116c80ee85701df33577d70", "url": "https://git.kernel.org/stable/c/1df2dc09926f61319116c80ee85701df33577d70" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3b0becf8b1ecf642a9edaf4c9628ffc641e490d6", "url": "https://git.kernel.org/stable/c/3b0becf8b1ecf642a9edaf4c9628ffc641e490d6" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9084fe1b3572664ad276f427dce575f580c9799a", "url": "https://git.kernel.org/stable/c/9084fe1b3572664ad276f427dce575f580c9799a" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c02027b5742b5aa804ef08a4a9db433295533046", "url": "https://git.kernel.org/stable/c/c02027b5742b5aa804ef08a4a9db433295533046" } ], "release_date": "2024-03-15T21:15:00", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1" }, "products": [ "CentOS-6:kernel-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els23.noarch", "CentOS-6:kernel-debug-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-devel-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els23.i686", "CentOS-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:python-perf-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els23.noarch", "CentOS-6:perf-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64", "CentOS-6:kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els23.x86_64" ] } ], "threats": [ { "category": "impact", "details": "High" } ] } ] }