{ "document": { "aggregate_severity": { "text": "Medium" }, "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/debian10els/vex/2023/cve-2023-52831-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-08-25T12:55:34Z", "generator": { "date": "2026-08-25T12:55:34Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-52831-ELS_OS-DEBIAN10ELS", "initial_release_date": "2023-01-01T00:00:00Z", "revision_history": [ { "date": "2023-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-08-25T12:55:34Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on 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} } } ], "category": "architecture", "name": "all" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" }, { "category": "default_component_of", "full_product_name": { "name": "libcpupower1-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 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"category": "default_component_of", "full_product_name": { "name": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10", "product_id": "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64" }, "product_reference": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-52831", "cwe": { "id": "CWE-617", "name": "Reachable Assertion" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpu/hotplug: Don't offline the last non-isolated CPU\n\nIf a system has isolated CPUs via the \"isolcpus=\" command line parameter,\nthen an attempt to offline the last housekeeping CPU will result in a\nWARN_ON() when rebuilding the scheduler domains and a subsequent panic due\nto and unhandled empty CPU mas in partition_sched_domains_locked().\n\ncpuset_hotplug_workfn()\n rebuild_sched_domains_locked()\n ndoms = generate_sched_domains(&doms, &attr);\n cpumask_and(doms[0], top_cpuset.effective_cpus, housekeeping_cpumask(HK_FLAG_DOMAIN));\n\nThus results in an empty CPU mask which triggers the warning and then the\nsubsequent crash:\n\nWARNING: CPU: 4 PID: 80 at kernel/sched/topology.c:2366 build_sched_domains+0x120c/0x1408\nCall trace:\n build_sched_domains+0x120c/0x1408\n partition_sched_domains_locked+0x234/0x880\n rebuild_sched_domains_locked+0x37c/0x798\n rebuild_sched_domains+0x30/0x58\n cpuset_hotplug_workfn+0x2a8/0x930\n\nUnable to handle kernel paging request at virtual address fffe80027ab37080\n partition_sched_domains_locked+0x318/0x880\n rebuild_sched_domains_locked+0x37c/0x798\n\nAside of the resulting crash, it does not make any sense to offline the last\nlast housekeeping CPU.\n\nPrevent this by masking out the non-housekeeping CPUs when selecting a\ntarget CPU for initiating the CPU unplug operation via the work queue.", "title": "Vulnerability description" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-config-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-doc-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-52831" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3073f6df783d9d75f7f69f73e16c7ef85d6cfb63", "url": "https://git.kernel.org/stable/c/3073f6df783d9d75f7f69f73e16c7ef85d6cfb63" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/335a47ed71e332c82339d1aec0c7f6caccfcda13", "url": "https://git.kernel.org/stable/c/335a47ed71e332c82339d1aec0c7f6caccfcda13" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/3410b702354702b500bde10e3cc1f9db8731d908", "url": "https://git.kernel.org/stable/c/3410b702354702b500bde10e3cc1f9db8731d908" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/38685e2a0476127db766f81b1c06019ddc4c9ffa", "url": "https://git.kernel.org/stable/c/38685e2a0476127db766f81b1c06019ddc4c9ffa" } ], "release_date": "2024-05-21T16:15:00Z", "threats": [ { "category": "impact", "details": "Moderate" }, { "category": "impact", "date": "2026-07-25T03:53:53.598521Z", "details": "The debian10els kernel is not affected by CVE-2023-52831: the vulnerable code was never introduced into this branch.", "product_ids": [ "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-config-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-doc-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64", "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all", "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all" ] } ] } ] }