{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52831", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T15:19:24.251Z", "datePublished": "2024-05-21T15:31:33.566Z", "dateUpdated": "2026-05-23T15:27:14.150Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:27:14.150Z" }, "descriptions": [ { "lang": "en", "value": "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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/cpu.c" ], "versions": [ { "version": "fea9dd8653ff39ce383c54e747bde4c39289b4ad", "lessThan": "3410b702354702b500bde10e3cc1f9db8731d908", "status": "affected", "versionType": "git" }, { "version": "07f9e0c9987bf1c4ef57611ad2f789ba68978102", "lessThan": "335a47ed71e332c82339d1aec0c7f6caccfcda13", "status": "affected", "versionType": "git" }, { "version": "2b8272ff4a70b866106ae13c36be7ecbef5d5da2", "lessThan": "3073f6df783d9d75f7f69f73e16c7ef85d6cfb63", "status": "affected", "versionType": "git" }, { "version": "2b8272ff4a70b866106ae13c36be7ecbef5d5da2", "lessThan": "38685e2a0476127db766f81b1c06019ddc4c9ffa", "status": "affected", "versionType": "git" }, { "version": "9734e4c0c470258c32b6aa5ea7ef8a86506c0909", "status": "affected", "versionType": "git" }, { "version": "6.1.53", "lessThan": "6.1.64", "status": "affected", "versionType": "semver" }, { "version": "6.5.3", "lessThan": "6.5.13", "status": "affected", "versionType": "semver" }, { "version": "6.4.16", "lessThan": "6.5", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/cpu.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.64", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.13", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.3", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.53", "versionEndExcluding": "6.1.64" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5.3", "versionEndExcluding": "6.5.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3410b702354702b500bde10e3cc1f9db8731d908" }, { "url": "https://git.kernel.org/stable/c/335a47ed71e332c82339d1aec0c7f6caccfcda13" }, { "url": "https://git.kernel.org/stable/c/3073f6df783d9d75f7f69f73e16c7ef85d6cfb63" }, { "url": "https://git.kernel.org/stable/c/38685e2a0476127db766f81b1c06019ddc4c9ffa" } ], "title": "cpu/hotplug: Don't offline the last non-isolated CPU", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-05-22T19:07:45.620666Z", "id": "CVE-2023-52831", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-24T20:44:55.485Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:36.073Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/3410b702354702b500bde10e3cc1f9db8731d908", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/335a47ed71e332c82339d1aec0c7f6caccfcda13", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/3073f6df783d9d75f7f69f73e16c7ef85d6cfb63", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/38685e2a0476127db766f81b1c06019ddc4c9ffa", "tags": [ "x_transferred" ] } ] } ] } }