CVE-2026-45869

Kernel crash via uninitialized power supply handle

Published May 27, 2026 · Updated May 27, 2026

NULL pointer dereference in the Linux Kernel wm97xx battery driver allows local users to crash the kernel during device probe. The probe path enables the IRQ before registering its power_supply handle, so an intervening charger interrupt passes an uninitialized handle to power_supply_changed(). Reachability requires the wm97xx driver to be probing hardware while the interrupt lands within that narrow interval; the record reports a kernel crash, not data access or code execution.

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

What happened

NULL pointer dereference in the Linux Kernel wm97xx battery driver allows local users to crash the kernel during device probe. The probe path enables the IRQ before registering its power_supply handle, so an intervening charger interrupt passes an uninitialized handle to power_supply_changed(). Reachability requires the wm97xx driver to be probing hardware while the interrupt lands within that narrow interval; the record reports a kernel crash, not data access or code execution.

The record

CVE
CVE-2026-45869
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=2.6.32
  2. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <39fe0eac6d755ef215026518985fcf8de9360e9e
  3. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <3d7b5391bb95505b3581c1fb77150c467ab92864
  4. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <438f9a303ea8b55162b2d5376490c2ab3ec165a0
  5. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <86183153c299e8bb1839e717286d6c6f39508a59
  6. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <93bdf715d33cf5ee01c58e8546c2469c71ce082a
  7. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <9b7d77cb046b4487e8e511e04e62b6f416ce845c
  8. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <c0def811ad8d642dca9b6d31a198cc39f5f90837
  9. Affected versionversion=7c87942aef52d2120e95ff1dec739998b9f95a78 <dfaf235d5a6b60cbf115a14a656946303ad007b7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=2.6.32; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <39fe0eac6d755ef215026518985fcf8de9360e9e; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <3d7b5391bb95505b3581c1fb77150c467ab92864; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <438f9a303ea8b55162b2d5376490c2ab3ec165a0; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <86183153c299e8bb1839e717286d6c6f39508a59; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <93bdf715d33cf5ee01c58e8546c2469c71ce082a; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <9b7d77cb046b4487e8e511e04e62b6f416ce845c; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <c0def811ad8d642dca9b6d31a198cc39f5f90837; version=7c87942aef52d2120e95ff1dec739998b9f95a78 <dfaf235d5a6b60cbf115a14a656946303ad007b7

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

CWE-476NULL Pointer Dereference
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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