cpu: hotplug: Bound hotplug states sysfs output

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72066
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:21:16 UTC
Updated2026-08-17 06:18:05 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001760000 probability, percentile 0.074470000 (date 2026-08-19)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e 27481cf4365a6ff5c9be3590143e7ed434000266 git Not specified
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e 2408be459c70ef4250da1a9e50f5478e6b250d61 git Not specified
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635 git Not specified
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e 998f66e9ce320f3433f60b948e3698b744754a46 git Not specified
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e 61a73a123ac7a7fbc57382531f8cb7092d569aba git Not specified
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e 6cb15b81ff545840048fb0e1a6e827d560dbf367 git Not specified
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e 631d53102da9f469c96b882b770336bec095b833 git Not specified
CNA Linux Linux affected 98f8cdce1db580b99fce823a48eea2cb2bdb261e 86f436567f2516a0083b210bedc933544826a2c3 git Not specified
CNA Linux Linux affected 4.6 Not specified
CNA Linux Linux unaffected 4.6 semver Not specified
CNA Linux Linux unaffected 5.10.265 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2408be459c70ef4250da1a9e50f5478e6b250d61 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/631d53102da9f469c96b882b770336bec095b833 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/86f436567f2516a0083b210bedc933544826a2c3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6cb15b81ff545840048fb0e1a6e827d560dbf367 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/998f66e9ce320f3433f60b948e3698b744754a46 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/27481cf4365a6ff5c9be3590143e7ed434000266 https://git.kernel.org/stable/c/27481cf4365a6ff5c9be3590143e7ed434000266 git.kernel.org
git.kernel.org/stable/c/61a73a123ac7a7fbc57382531f8cb7092d569aba 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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