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CVE-2026-45885

📛 CVE Title

power: supply: cpcap-battery: Fix use-after-free in power_supply_changed()

Description

In the Linux kernel, the following vulnerability has been resolved: power: supply: cpcap-battery: 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()`. 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
CVSS 8.4 / 10 8.4 8.4 / 10
CVSS vector
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Effective score
8.4 / 10 HIGH source: CNA overview
CWE(s)
Reserved
2026-05-13
Published
2026-05-27 12:16 UTC
Last updated
2026-05-27 12:16 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/45xxx/CVE-2026-45885.json
Linked Threat
CVE-2026-45885 — CVE-2026-45885

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 14:17:02 UTC
NVD last modified
2026-06-25 21:13:05 UTC
NVD CVSS v3.1
CVSS 7.8 / 10 7.8 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
5.54% vs all CVEs — higher = more likely to be exploited, as of 2026-07-26

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

NVD / KEV / EPSS data refreshed 2026-07-27 10:45 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

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-2026-32351
Assigner
Linux
Published
May 27, 2026, 12:16:57 PM
Updated
May 27, 2026, 12:16:57 PM
EUVD base score
0.0 / 10
EUVD-reported EPSS
0.1600
Vendors
Linux
Products
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <f3fbe309c9bfe1aac1e2b26543e9dc4829f3275a)
Linux (patch: 5.15.202)
Linux (patch: 6.1.165)
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <2841bbb5a35c4449c0a0458e8e476b2a62f95147)
Linux (patch: 0)
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <e261be6f18929f2397cd54cd583a2df624c129c1)
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <2ce2334be155bd8bad6377e99984246ce4dbd08c)
Linux (4.13)
Linux (patch: 6.19.4)
Linux (patch: 6.12.75)
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <3ff75cba1c98349a23a8f9333981deba1972cc11)
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <cbb9b07f88a9ef6518934c41eb3e8cf840d657d5)
Linux (patch: 7.0)
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <642f33e34b969eedec334738fd5df95d2dc42742)
Linux (874b2adbed1253a11549cb9b7b912ab65fea9cf2 <c549dd3de4b3f6e726d1b8386d40ccf7d3abdbe4)
Linux (patch: 6.6.128)
Linux (patch: 5.10.252)
Linux (patch: 6.18.14)
Aliases
GHSA-pxv4-rwxf-m755

ENISA description: In the Linux kernel, the following vulnerability has been resolved: power: supply: cpcap-battery: 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()`. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.

EUVD references (8)

Affected products (2)

VendorProductVersionsPlatforms
Linux Linux 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected), 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected), 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected), 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected), 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected), 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected), 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected), 874b2adbed1253a11549cb9b7b912ab65fea9cf2 (affected)
Linux Linux 4.13 (affected), 0 (unaffected), 5.10.252 (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 (8)

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

Web references (11)

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

NVD-tagged references (8)

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

Remediations (18)

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

  • web:cybersecuritynews.com

    No patch has been released yet; Microsoft has instead issued a multi-step manual mitigation guide while a formal security update is prepared. Windows BitLocker Security Bypass The vulnerability originates in WinRE's handling of the BootExecute registry value under HKLM\ControlSet001\Control\Session Manager.

    2026-06-04 00:16 UTC
  • web:dailysecurityreview.com

    Microsoft has disclosed CVE - 2026 -45585, a Windows security feature bypass dubbed "YellowKey," that allows attackers to access BitLocker-protected drives without the encryption key — and no patch is available, leaving organizations reliant on manual workarounds to close the exposure window until a fix is released. The YellowKey Attack Path Through Windows Recovery Environment The ...

    2026-06-04 00:16 UTC
  • web:msrc.microsoft.com

    Security Update Guide - Microsoft Security Response Center

    2026-06-04 00:16 UTC
  • web:nvd.nist.gov

    The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices. We are issuing this CVE to provide mitigation guidance that can be implemented to protect against this vulnerability until the security update is made available. Mitigation FAQs Should I leverage the temporary mitigation ?

    2026-06-04 00:16 UTC
  • web:pupuweb.com

    Microsoft Message Microsoft has updated the mitigation guidance in CVE - 2026 -45585, a Windows BitLocker security feature bypass vulnerability. The updated guidance replaces previously documented manual mitigation steps with a script that helps reduce exposure while a future security update is developed to address this vulnerability.

    2026-06-04 00:16 UTC
  • web:socprime.com

    BitLocker is designed to protect data at rest even when a device is lost, stolen, or powered off, which is why a bypass against that trust model draws immediate attention. The CVE - 2026 -45585 vulnerability, publicly referred to as YellowKey, is a Windows security feature bypass flaw that Microsoft says can let an attacker with physical access sidestep BitLocker protections and access encrypted ...

    2026-06-04 00:16 UTC
  • web:vulert.com

    CVE - 2026 -45585 is a YellowKey BitLocker security feature bypass affecting Windows 11 and Windows Server 2025. Learn Microsoft's mitigation steps and protection guidance.

    2026-06-04 00:16 UTC
  • web:www.helpnetsecurity.com

    Microsoft is working on a fix for CVE - 2026 -45585 (aka "Yellowkey"), a vulnerability that can be used to bypass Windows' BitLocker protection.

    2026-06-04 00:16 UTC
  • web:www.levelblue.com

    At the time of writing, no patch is available, and no CVE has been assigned. Microsoft has since assigned CVE - 2026 -45585 to this issue and released official mitigation guidance, with a security update pending. The vulnerability is classified as a BitLocker Security Feature Bypass requiring physical access.

    2026-06-04 00:16 UTC
  • web:www.securityweek.com

    Microsoft has announced mitigations for CVE - 2026 -45585, a BitLocker bypass triggered via FsTx in Windows Recovery.

    2026-06-04 00:16 UTC
  • 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
  • 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.

    2026-06-19 02:27 UTC
  • web:thehackernews.com

    Microsoft patches 59 vulnerabilities, including six actively exploited zero-days, with CISA mandating urgent federal remediation .

    2026-06-19 02:27 UTC
  • 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
  • web:www.csoonline.com

    Microsoft highlighted six new and actively exploited vulnerabilities among the 60 fixes issued in today's February Patch Tuesday releases.

    2026-06-19 02:27 UTC
  • web:www.forbes.com

    Following the release of a BitLocker zero-day security bypass by a disgruntled hacker, Microsoft has now offered mitigation advice until a patch is available.

    2026-06-19 02:27 UTC
  • 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
  • web:zecurit.com

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

    2026-06-19 02:27 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-45885.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/cpcap-battery.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "4.13"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.10.252",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "vulnerable": true
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                },
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: cpcap-battery: 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\nFix this racy use-after-free by making sure the IRQ is requested _after_\nthe registration of the `power_supply` handle."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:16:57.246Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c549dd3de4b3f6e726d1b8386d40ccf7d3abdbe4"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ff75cba1c98349a23a8f9333981deba1972cc11"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ce2334be155bd8bad6377e99984246ce4dbd08c"
        },
        {
          "url": "https://git.kernel.org/stable/c/cbb9b07f88a9ef6518934c41eb3e8cf840d657d5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3fbe309c9bfe1aac1e2b26543e9dc4829f3275a"
        },
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          "url": "https://git.kernel.org/stable/c/2841bbb5a35c4449c0a0458e8e476b2a62f95147"
        },
        {
          "url": "https://git.kernel.org/stable/c/e261be6f18929f2397cd54cd583a2df624c129c1"
        },
        {
          "url": "https://git.kernel.org/stable/c/642f33e34b969eedec334738fd5df95d2dc42742"
        }
      ],
      "title": "power: supply: cpcap-battery: 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-2026-45885",
    "datePublished": "2026-05-27T12:16:57.246Z",
    "dateReserved": "2026-05-13T15:03:33.082Z",
    "dateUpdated": "2026-05-27T12:16:57.246Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}