CVE-2024-27027

Kernel disruption via stale DPLL registrations

Published May 1, 2024 · Updated May 11, 2026

Improper DPLL registration teardown in Linux 6.7 through 6.7.10 and 6.8 through 6.8.1 allows local users to trigger kernel warnings. The dpll_xa_ref_dpll_del() and dpll_xa_ref_pin_del() paths leave each registration on its list unless the shared reference count reaches zero. The defect appears when the same pin has multiple registrations on one DPLL device; published evidence reports WARN assertions during unregister, not a demonstrated crash.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper DPLL registration teardown in Linux 6.7 through 6.7.10 and 6.8 through 6.8.1 allows local users to trigger kernel warnings. The dpll_xa_ref_dpll_del() and dpll_xa_ref_pin_del() paths leave each registration on its list unless the shared reference count reaches zero. The defect appears when the same pin has multiple registrations on one DPLL device; published evidence reports WARN assertions during unregister, not a demonstrated crash.

The record

CVE
CVE-2024-27027
Published
May 1, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.7
  2. Affected versionversion=9431063ad323ac864750aeba4d304389bc42ca4e <769324eb35143462542cdb15483cdaf4877bf661
  3. Affected versionversion=9431063ad323ac864750aeba4d304389bc42ca4e <b27e32e9367dac024cd6f61f22655714f483fd67
  4. Affected versionversion=9431063ad323ac864750aeba4d304389bc42ca4e <b446631f355ece73b13c311dd712c47381a23172

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=9431063ad323ac864750aeba4d304389bc42ca4e <769324eb35143462542cdb15483cdaf4877bf661; version=9431063ad323ac864750aeba4d304389bc42ca4e <b27e32e9367dac024cd6f61f22655714f483fd67; version=9431063ad323ac864750aeba4d304389bc42ca4e <b446631f355ece73b13c311dd712c47381a23172

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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