CVE-2026-45946

Description

In the Linux kernel, the following vulnerability has been resolved: power: supply: ab8500: Fix use-after-free in power_supply_changed() Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `power_supply` handle, means that the `power_supply` handle will be deallocated/unregistered _before_ the interrupt handler (since `devm_` naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the `power_supply` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `power_supply_changed()` with a freed `power_supply` handle. Which usually crashes the system or otherwise silently corrupts the memory... Note that there is a similar situation which can also happen during `probe()`; the possibility of an interrupt firing _before_ registering the `power_supply` handle. This would then lead to the nasty situation of using the `power_supply` handle *uninitialized* in `power_supply_changed()`. Commit 1c1f13a006ed ("power: supply: ab8500: Move to componentized binding") introduced this issue during a refactorization. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.

Overview

State: PUBLISHED
Assigner (CNA): Linux
CVSS severity: high
CVSS score: 7.1 / 10
CVSS vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Effective score: 7.1 / 10 HIGH source: CNA overview
CWE(s): —
Reserved: 2026-05-13
Published: 2026-05-27 12:18 UTC
Last updated: 2026-05-27 12:18 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/45xxx/CVE-2026-45946.json
Linked Threat: CVE-2026-45946 — CVE-2026-45946

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-05-27 14:17:10 UTC
NVD last modified: 2026-06-17 10:52:46 UTC
NVD CVSS v3.1: 7.8 / 10 HIGH source: nvd@nist.gov
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 1.8 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0016 (probability of exploitation in next 30 days)
EPSS percentile: 5.59% vs all CVEs — higher = more likely to be exploited, as of 2026-08-01

NVD-assigned CWE(s): CWE-416 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-32230
Assigner: Linux
Published: May 27, 2026, 12:18:02 PM
Updated: May 27, 2026, 12:18:02 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.1600
Vendors: Linux
Products: Linux (1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb <f50433f2603def08b21a4bf2fd238687fb5cbde9)

Linux (patch: 5.15.202)

Linux (1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb <551672981fe227122258a25a385a05f5c0746ad6)

Linux (patch: 6.12.75)

Linux (patch: 6.18.14)

Linux (1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb <c4af8a98bb52825a5331ae1d0604c0ea6956ba4b)

Linux (1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb <46dbda27b028d78087667e8280966b99cec015ca)

Linux (1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb <709db4b476e254579d9c48ec34d397a41ca0c407)

Linux (1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb <43cbb78ee047b9b12d096d40e3be265969d4c1f8)

Linux (patch: 6.1.165)

Linux (patch: 7.0)

Linux (5.14)

Linux (5.13.4 <5.14)

Linux (341db343768bc44f3512facc464021730d64071c)

Linux (1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb <847eeb6c0efcd76c7def73857cf798a4fcd8f79b)

Linux (patch: 6.19.4)

Linux (patch: 0)

Linux (patch: 6.6.128)
Aliases: GHSA-wp75-7gqm-j93m

ENISA description: In the Linux kernel, the following vulnerability has been resolved: power: supply: ab8500: Fix use-after-free in power_supply_changed() Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `power_supply` handle, means that the `power_supply` handle will be deallocated/unregistered _before_ the interrupt handler (since `devm_` naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the `power_supply` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `power_supply_changed()` with a freed `power_supply` handle. Which usually crashes the system or otherwise silently corrupts the memory... Note that there is a similar situation which can also happen during `probe()`; the possibility of an interrupt firing _before_ registering the `power_supply` handle. This would then lead to the nasty situation of using the `power_supply` handle *uninitialized* in `power_supply_changed()`. Commit 1c1f13a006ed ("power: supply: ab8500: Move to componentized binding") introduced this issue during a refactorization. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.

EUVD references (7)

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb` (affected), `1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb` (affected), `1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb` (affected), `1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb` (affected), `1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb` (affected), `1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb` (affected), `1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb` (affected), `341db343768bc44f3512facc464021730d64071c` (affected), `5.13.4` (affected)	—
Linux	Linux	`5.14` (affected), `0` (unaffected), `5.15.202` (unaffected), `6.1.165` (unaffected), `6.6.128` (unaffected), `6.12.75` (unaffected), `6.18.14` (unaffected), `6.19.4` (unaffected), `7.0` (unaffected)	—

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor references (7)

References embedded in the original CVE record by the assigning CNA.

Web references (10)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

https://git.kernel.org/stable/c/43cbb78ee047b9b12d096d40e3be265969d4c1f8 tenable:git.kernel.org
https://git.kernel.org/stable/c/46dbda27b028d78087667e8280966b99cec015ca tenable:git.kernel.org
https://git.kernel.org/stable/c/551672981fe227122258a25a385a05f5c0746ad6 tenable:git.kernel.org
https://git.kernel.org/stable/c/709db4b476e254579d9c48ec34d397a41ca0c407 tenable:git.kernel.org
https://git.kernel.org/stable/c/847eeb6c0efcd76c7def73857cf798a4fcd8f79b tenable:git.kernel.org
https://git.kernel.org/stable/c/c4af8a98bb52825a5331ae1d0604c0ea6956ba4b tenable:git.kernel.org
https://git.kernel.org/stable/c/f50433f2603def08b21a4bf2fd238687fb5cbde9 tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-45946 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-45946 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org

NVD-tagged references (7)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://git.kernel.org/stable/c/43cbb78ee047b9b12d096d40e3be265969d4c1f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/46dbda27b028d78087667e8280966b99cec015ca 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/551672981fe227122258a25a385a05f5c0746ad6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/709db4b476e254579d9c48ec34d397a41ca0c407 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/847eeb6c0efcd76c7def73857cf798a4fcd8f79b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/c4af8a98bb52825a5331ae1d0604c0ea6956ba4b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/f50433f2603def08b21a4bf2fd238687fb5cbde9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch

Remediations (17)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...

web:cybersecuritynews.com

Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

2026-06-04 00:15 UTC
Microsoft Defender Vulnerabilities Added to CISA KEV (CVE-2026-41091 ...

web:op-c.net

CISA added two actively exploited Microsoft Defender vulnerabilities, CVE - 2026 -41091 and CVE - 2026 -45498, to its KEV catalog. Learn the risks and recommended actions.

2026-06-04 00:15 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-06-04 00:15 UTC
Portal for ArcGIS Security 2026 Update 1 Patch - Esri Support

web:support.esri.com

The C version of this patch also includes additional bug fixes not related to security, refer to the updated Issues Addressed with this Patch section for the latest details. April 20, 2026 : The 11.4 version of the Portal for ArcGIS Security 2026 Update 1 Patch is now available.

2026-06-04 00:15 UTC
Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...

web:support.servicenow.com

Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

2026-06-04 00:15 UTC
April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

2026-06-04 00:15 UTC
Microsoft Patch Tuesday - May 2026 - Lansweeper

web:www.lansweeper.com

Which vulnerabilities, issues, and other things did Microsoft update? Discover what's new using Lansweeper's Patch Tuesday May 2026 summary.

2026-06-04 00:15 UTC
Microsoft Defender vulnerabilities are being exploited in the wild

web:www.malwarebytes.com

The KEV catalog tracks vulnerabilities known to be exploited in the wild and sets patch deadlines for Federal Civilian Executive Branch (FCEB) agencies. Five of the added vulnerabilities are quite old by vulnerability standards. Patches were released in 2008, 2009, and 2010. But the Microsoft Defender vulnerabilities are from this year. Those ...

2026-06-04 00:15 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-06-04 00:15 UTC
Patch Tuesday June 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-06-04 00:15 UTC
Microsoft Confirms Defender RoguePlanet 0-Day Exploit and Working to ...

web:cybersecuritynews.com

Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.

2026-06-19 02:27 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Security Update Guide - Microsoft Security Response Center

2026-06-19 02:27 UTC
Nvd - Cve-2026-5946

web:nvd.nist.gov

Information Technology Laboratory National Vulnerability Database Vulnerabilities

2026-06-19 02:27 UTC
Microsoft is working on a patch for 'YellowKey ... - Computerworld

web:www.computerworld.com

Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read ...

2026-06-19 02:27 UTC
May 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

2026-06-19 02:27 UTC
Microsoft working on a fix for RoguePlanet, a flaw that grants full PC ...

web:www.malwarebytes.com

Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.

2026-06-19 02:27 UTC
Oracle Critical Security Patch Update Advisory - May 2026

web:www.oracle.com

This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.

2026-06-19 02:27 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-45946.json.

{
  "containers": {
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          "programFiles": [
            "drivers/power/supply/ab8500_charger.c"
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              "status": "unaffected",
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            },
            {
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              "status": "unaffected",
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              "status": "unaffected",
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                },
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: ab8500: Fix use-after-free in power_supply_changed()\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `power_supply` handle, means that\nthe `power_supply` handle will be deallocated/unregistered _before_ the\ninterrupt handler (since `devm_` naturally deallocates in reverse\nallocation order). This means that during removal, there is a race\ncondition where an interrupt can fire just _after_ the `power_supply`\nhandle has been freed, *but* just _before_ the corresponding\nunregistration of the IRQ handler has run.\n\nThis will lead to the IRQ handler calling `power_supply_changed()` with\na freed `power_supply` handle. Which usually crashes the system or\notherwise silently corrupts the memory...\n\nNote that there is a similar situation which can also happen during\n`probe()`; the possibility of an interrupt firing _before_ registering\nthe `power_supply` handle. This would then lead to the nasty situation\nof using the `power_supply` handle *uninitialized* in\n`power_supply_changed()`.\n\nCommit 1c1f13a006ed (\"power: supply: ab8500: Move to componentized\nbinding\") introduced this issue during a refactorization. Fix this racy\nuse-after-free by making sure the IRQ is requested _after_ the\nregistration of the `power_supply` handle."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:18:02.708Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/43cbb78ee047b9b12d096d40e3be265969d4c1f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/551672981fe227122258a25a385a05f5c0746ad6"
        },
        {
          "url": "https://git.kernel.org/stable/c/f50433f2603def08b21a4bf2fd238687fb5cbde9"
        },
        {
          "url": "https://git.kernel.org/stable/c/847eeb6c0efcd76c7def73857cf798a4fcd8f79b"
        },
        {
          "url": "https://git.kernel.org/stable/c/709db4b476e254579d9c48ec34d397a41ca0c407"
        },
        {
          "url": "https://git.kernel.org/stable/c/46dbda27b028d78087667e8280966b99cec015ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/c4af8a98bb52825a5331ae1d0604c0ea6956ba4b"
        }
      ],
      "title": "power: supply: ab8500: Fix use-after-free in power_supply_changed()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45946",
    "datePublished": "2026-05-27T12:18:02.708Z",
    "dateReserved": "2026-05-13T15:03:33.088Z",
    "dateUpdated": "2026-05-27T12:18:02.708Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}