260 lines
12 KiB
JSON
260 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2023-52831",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-05-21T15:19:24.251Z",
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"datePublished": "2024-05-21T15:31:33.566Z",
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"dateUpdated": "2026-05-23T15:27:14.150Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-23T15:27:14.150Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/cpu.c"
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],
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"versions": [
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{
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"version": "fea9dd8653ff39ce383c54e747bde4c39289b4ad",
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"lessThan": "3410b702354702b500bde10e3cc1f9db8731d908",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "07f9e0c9987bf1c4ef57611ad2f789ba68978102",
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"lessThan": "335a47ed71e332c82339d1aec0c7f6caccfcda13",
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"status": "affected",
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},
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{
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"version": "2b8272ff4a70b866106ae13c36be7ecbef5d5da2",
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"lessThan": "3073f6df783d9d75f7f69f73e16c7ef85d6cfb63",
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"version": "2b8272ff4a70b866106ae13c36be7ecbef5d5da2",
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"lessThan": "38685e2a0476127db766f81b1c06019ddc4c9ffa",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9734e4c0c470258c32b6aa5ea7ef8a86506c0909",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6.1.53",
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"lessThan": "6.1.64",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.5.3",
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"lessThan": "6.5.13",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.4.16",
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"lessThan": "6.5",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/cpu.c"
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],
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"versions": [
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{
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"version": "6.6",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.6",
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"status": "unaffected",
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},
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{
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"version": "6.1.64",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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},
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{
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"version": "6.5.13",
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"lessThanOrEqual": "6.5.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.3",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.7",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1.53",
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"versionEndExcluding": "6.1.64"
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},
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.5.3",
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"references": [
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}
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],
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"title": "cpu/hotplug: Don't offline the last non-isolated CPU",
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"type": "ssvc",
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"content": {
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"timestamp": "2024-05-22T19:07:45.620666Z",
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"id": "CVE-2023-52831",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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