CVE-2026-43487

System freeze via incompatible drive power management

Published May 13, 2026 · Updated May 13, 2026

ATA power-management handling in affected Linux Kernel releases allows local users to cause system freezes with ST1000DM010-2EP102 drives. The libata-core quirk table omits ATA_QUIRK_NOLPM for this Seagate model, so the ATA layer enables link power management despite the drive's incompatibility. Exposure requires Linux running an affected kernel with that drive and LPM active; the documented consequence is an intermittent full-system freeze.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

ATA power-management handling in affected Linux Kernel releases allows local users to cause system freezes with ST1000DM010-2EP102 drives. The libata-core quirk table omits ATA_QUIRK_NOLPM for this Seagate model, so the ATA layer enables link power management despite the drive's incompatibility. Exposure requires Linux running an affected kernel with that drive and LPM active; the documented consequence is an intermittent full-system freeze.

The record

CVE
CVE-2026-43487
Published
May 13, 2026
Updated
May 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 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=6.9
  2. Affected versionversion=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <87f0349beaacab2ac60c4a1b6dcff254cef7d5a0
  3. Affected versionversion=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <a4bfb1947eda615fe0b2fc54beb6bedc03372e34
  4. Affected versionversion=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <b3b1d3ae1d87bc9398fb715c945968bf4c75a09a
  5. Affected versionversion=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <f897b72cc74d24e7106716184f450d4045a6289b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.9; version=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <87f0349beaacab2ac60c4a1b6dcff254cef7d5a0; version=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <a4bfb1947eda615fe0b2fc54beb6bedc03372e34; version=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <b3b1d3ae1d87bc9398fb715c945968bf4c75a09a; version=7627a0edef548c4c4dea62df51cc26bfe5bbcab8 <f897b72cc74d24e7106716184f450d4045a6289b

Published CVSS scores

5.5OracleCVSS: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

T1499Endpoint Denial of Service

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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