HighFix available
cpu: hotplug: Bound hotplug states sysfs output
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: cpu: hotplug: Bound hotplug states sysfs output states_show() adds CPU hotplug state names into a single sysfs buffer using sprintf(). With enough registered states, this can write past the end of the PAGE_SIZE buffer. Use sysfs_emit_at() so output is bounded.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.265, 5.15.212, 6.1.178, 6.12.97, 6.18.40, 6.6.145, 7.1.5
- CVEs
- CVE-2026-72066
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 14:20 UTC · Revision 1
Source evidence
cpu: hotplug: Bound hotplug states sysfs output
core-osv · Original sourcePublished 15 Aug 2026, 05:52 UTC
In the Linux kernel, the following vulnerability has been resolved: cpu: hotplug: Bound hotplug states sysfs output states_show() adds CPU hotplug state names into a single sysfs buffer using sprintf(). With enough registered states, this can write past the end of the PAGE_SIZE buffer. Use sysfs_emit_at() so output is bounded.
osv:CVE-2026-72066
Kernel
Fixed versions: 5.10.265, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
Complete source record
{
"id": "2ad532ebba2c708cec6e38077cfa3d0a5a1a2fb930398d9038ad093ebb606db9",
"url": "https://osv.dev/vulnerability/CVE-2026-72066",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "cpu: hotplug: Bound hotplug states sysfs output",
"summary": "In the Linux kernel, the following vulnerability has been resolved: cpu: hotplug: Bound hotplug states sysfs output states_show() adds CPU hotplug state names into a single sysfs buffer using sprintf(). With enough registered states, this can write past the end of the PAGE_SIZE buffer. Use sysfs_emit_at() so output is bounded.",
"evidence": "osv:CVE-2026-72066",
"products": [
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"name": {
"value": "Kernel",
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"prerequisites": [],
"fixed_versions": [
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"value": "5.10.265",
"evidence": "/affected/1/ranges"
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{
"value": "5.15.212",
"evidence": "/affected/1/ranges"
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{
"value": "6.1.178",
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{
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{
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},
{
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"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "CVE-2026-72066",
"aliases": [
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"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
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"affected": [
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{
"ranges": [
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{
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{
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{
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"events": [
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{
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{
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"events": [
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{
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}
]
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72066.json"
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],
"modified": "2026-10-28T02:30:29.234089181Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/2408be459c70ef4250da1a9e50f5478e6b250d61",
"https://git.kernel.org/stable/c/27481cf4365a6ff5c9be3590143e7ed434000266",
"https://git.kernel.org/stable/c/61a73a123ac7a7fbc57382531f8cb7092d569aba",
"https://git.kernel.org/stable/c/631d53102da9f469c96b882b770336bec095b833",
"https://git.kernel.org/stable/c/6cb15b81ff545840048fb0e1a6e827d560dbf367",
"https://git.kernel.org/stable/c/86f436567f2516a0083b210bedc933544826a2c3",
"https://git.kernel.org/stable/c/998f66e9ce320f3433f60b948e3698b744754a46",
"https://git.kernel.org/stable/c/de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72066.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-72066",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72066.json"
}
},
"related_cves": [
{
"value": "CVE-2026-72066",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 496304,
"published_at": "2026-08-15T05:52:19.527+00:00"
}