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CVE-2026-72066

HIGHCVSS 7.8/10EPSS 0.18%

Last modified

CVE-2026-72066 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
0.18%

7.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < 27481cf4365a6ff5c9be3590143e7ed434000266; >= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < 2408be459c70ef4250da1a9e50f5478e6b250d61; >= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635; >= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < 998f66e9ce320f3433f60b948e3698b744754a46; >= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < 61a73a123ac7a7fbc57382531f8cb7092d569aba; >= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < 6cb15b81ff545840048fb0e1a6e827d560dbf367; >= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < 631d53102da9f469c96b882b770336bec095b833; >= 98f8cdce1db580b99fce823a48eea2cb2bdb261e, < 86f436567f2516a0083b210bedc933544826a2c3
LinuxLinux4.6

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72066?
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.
How severe is CVE-2026-72066?
CVE-2026-72066 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72066?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST