CVE-2026-74271

Kernel memory corruption via undersized supplied_from array

Published Aug 15, 2026 · Updated Aug 15, 2026

An out-of-bounds write in the Linux power supply core from 3.10 allows local users to corrupt kernel memory via a multi-value device tree property. The __power_supply_populate_supplied_from function accesses psy->supplied_from[i-1] beyond its allocation when power-supplies contains multiple entries. Reachability requires an affected kernel and that device-tree configuration; the resulting corruption can crash or destabilize the system.

CVSS severity7.0
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in the Linux power supply core from 3.10 allows local users to corrupt kernel memory via a multi-value device tree property. The __power_supply_populate_supplied_from function accesses psy->supplied_from[i-1] beyond its allocation when power-supplies contains multiple entries. Reachability requires an affected kernel and that device-tree configuration; the resulting corruption can crash or destabilize the system.

The record

CVE
CVE-2026-74271
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=3.10
  2. Affected versionversion=f6e0b081fb300a4601b064346963cf6bb163f437 <14357ba006e1586e4b4e809c074b21baf0aa4c4b
  3. Affected versionversion=f6e0b081fb300a4601b064346963cf6bb163f437 <23a29ee1d9de38b7d6226b27653bc736b28ff05a
  4. Affected versionversion=f6e0b081fb300a4601b064346963cf6bb163f437 <ae55e4bf18ee0c4c170797dd65e17dbdf644fcf2
  5. Affected versionversion=f6e0b081fb300a4601b064346963cf6bb163f437 <ba61aed9a34671222d1149acfc2f0179a9ce7e80
  6. Affected versionversion=f6e0b081fb300a4601b064346963cf6bb163f437 <d0503357653ee62188987a26baa2d7f3689f367e
  7. Affected versionversion=f6e0b081fb300a4601b064346963cf6bb163f437 <fefc9dad30d545be288d50a0b10d00465015fcfe

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=f6e0b081fb300a4601b064346963cf6bb163f437 <14357ba006e1586e4b4e809c074b21baf0aa4c4b; version=f6e0b081fb300a4601b064346963cf6bb163f437 <23a29ee1d9de38b7d6226b27653bc736b28ff05a; version=f6e0b081fb300a4601b064346963cf6bb163f437 <ae55e4bf18ee0c4c170797dd65e17dbdf644fcf2; version=f6e0b081fb300a4601b064346963cf6bb163f437 <ba61aed9a34671222d1149acfc2f0179a9ce7e80; version=f6e0b081fb300a4601b064346963cf6bb163f437 <d0503357653ee62188987a26baa2d7f3689f367e; version=f6e0b081fb300a4601b064346963cf6bb163f437 <fefc9dad30d545be288d50a0b10d00465015fcfe

Published CVSS scores

5.1Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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

CWE-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

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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