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CVE-2026-72067· NVD / CVE Program· CNA Linux

cpu: hotplug: Preserve per instance callback errors

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 673db10729fb121ea1b16fe57791a0cb9eac1eb5, 77d4fa8a3ea1c3e8b996ac35e59aee9e77389905, 7a68257b90d8a9b6d605abc99469ded45ecba63b.

Low priority for now. Upgrade to Linux Linux 673db10729fb121ea1b16fe57791a0cb9eac1eb5, 77d4fa8a3ea1c3e8b996ac35e59aee9e77389905, 7a68257b90d8a9b6d605abc99469ded45ecba63b or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: cpu: hotplug: Preserve per instance callback errors cpuhp_invoke_callback() unwinds earlier callbacks for the same hotplug state when one instance fails. The rollback path currently reuses ret, so a successful rollback can hide the original error and make the failed transition look successful. Keep the rollback result separate from the original error.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Aug 15, 2026
Updated
Oct 16, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-72067

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.14affected
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before fe9c8d641f6991614d1229a3ffd3e33b879bba9caffected · git
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before ef39758637cc5b603fb05b625c45a98aa306e338affected · git
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before 95232281512b15338549171ed9a2acf21f946ffbaffected · git
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before 7a68257b90d8a9b6d605abc99469ded45ecba63baffected · git
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before 77d4fa8a3ea1c3e8b996ac35e59aee9e77389905affected · git
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before f77117530fc3f5932ffb107182a6dd34006be9b6affected · git
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before 9f7dc355f62c011e4afe8286cf71130d4bfb9d80affected · git
    • 724a86881d03ee5794148e65142e24ed3621be66 and later · before 673db10729fb121ea1b16fe57791a0cb9eac1eb5affected · git
    • before 4.14not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72065Aug 15, 2026 · net: mana: Validate the packet length reported by the NIC
    39Monitor
  • ← EarlierCVE-2026-72066Aug 15, 2026 · cpu: hotplug: Bound hotplug states sysfs output
    31Monitor
  • Later →CVE-2026-72069Aug 15, 2026 · locking/rt: Fix the incorrect RCU protection in rt_spin_unlock()
    39Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux673db10729fb121ea1b16fe57791a0cb9eac1eb5Vendor (CNA)
Linux Linux77d4fa8a3ea1c3e8b996ac35e59aee9e77389905Vendor (CNA)
Linux Linux7a68257b90d8a9b6d605abc99469ded45ecba63bVendor (CNA)
Linux Linux95232281512b15338549171ed9a2acf21f946ffbVendor (CNA)
Linux Linux9f7dc355f62c011e4afe8286cf71130d4bfb9d80Vendor (CNA)
Linux Linuxef39758637cc5b603fb05b625c45a98aa306e338Vendor (CNA)
Linux Linuxf77117530fc3f5932ffb107182a6dd34006be9b6Vendor (CNA)
Linux Linuxfe9c8d641f6991614d1229a3ffd3e33b879bba9cVendor (CNA)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records