Vulnerability-Lookup

FKIE_CVE-2026-89465

Vulnerability from fkie_nvd - Published: 2026-09-11 20:19 - Updated: 2026-09-14 13:19

Severity

8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: quiesce delayed work before teardown The threaded IRQ handler can queue pwr_rdy_work, max_charging_time_work and batt_presence_work. pwr_rdy_work and batt_presence_work can also queue max_charging_time_work, while batt_presence_work can requeue itself. rt9455_remove() cancels max_charging_time_work before batt_presence_work. The latter can therefore queue max_charging_time_work after it has already been cancelled: rt9455_remove() workqueue cancel pwr_rdy_work cancel max_charging_time_work batt_presence_work queues max_charging_time_work cancel batt_presence_work return devres frees rt9455_info max_charging_time_work dereferences rt9455_info The IRQ also remains registered until devres cleanup and can queue more work after any of the cancellation calls. If rt9455_hw_init() fails after the IRQ has been requested, probe returns without cancelling work that may already have been queued. A pending callback can then access rt9455_info after it has been freed. Register rt9455_cancel_all_delayed_works() through devm_add_action_or_reset() right after devm_power_supply_register(). devres invokes the action in reverse registration order, after the managed IRQ has been freed and before rt9455_info is released, so the delayed works are drained in both rt9455_remove() and the probe error path. Cancel pwr_rdy_work and batt_presence_work before max_charging_time_work because both can queue the latter. This issue was found by an in-house static analysis tool.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1b9978433c61a9b46e48832a1ebceee1cf5c9eb4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3e7a1ebc32fad5a558254a478efd401c17a24381
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/442c60c08ec23ac45da0a58877cab05e0a58f4ea
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7323e562f6961e4b7bce3225cde4ecbc78260deb
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/rt9455_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "442c60c08ec23ac45da0a58877cab05e0a58f4ea",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "1b9978433c61a9b46e48832a1ebceee1cf5c9eb4",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "7323e562f6961e4b7bce3225cde4ecbc78260deb",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "3e7a1ebc32fad5a558254a478efd401c17a24381",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/rt9455_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
              "lessThan": "4.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: rt9455: quiesce delayed work before teardown\n\nThe threaded IRQ handler can queue pwr_rdy_work,\nmax_charging_time_work and batt_presence_work.  pwr_rdy_work and\nbatt_presence_work can also queue max_charging_time_work, while\nbatt_presence_work can requeue itself.\n\nrt9455_remove() cancels max_charging_time_work before\nbatt_presence_work.  The latter can therefore queue\nmax_charging_time_work after it has already been cancelled:\n\n  rt9455_remove()                   workqueue\n    cancel pwr_rdy_work\n    cancel max_charging_time_work\n                                      batt_presence_work queues\n                                        max_charging_time_work\n    cancel batt_presence_work\n    return\n    devres frees rt9455_info\n                                      max_charging_time_work dereferences\n                                        rt9455_info\n\nThe IRQ also remains registered until devres cleanup and can queue more\nwork after any of the cancellation calls.  If rt9455_hw_init() fails\nafter the IRQ has been requested, probe returns without cancelling work\nthat may already have been queued.  A pending callback can then access\nrt9455_info after it has been freed.\n\nRegister rt9455_cancel_all_delayed_works() through\ndevm_add_action_or_reset() right after devm_power_supply_register().\ndevres invokes the action in reverse registration order, after the\nmanaged IRQ has been freed and before rt9455_info is released, so the\ndelayed works are drained in both rt9455_remove() and the probe error\npath.  Cancel pwr_rdy_work and batt_presence_work before\nmax_charging_time_work because both can queue the latter.\n\nThis issue was found by an in-house static analysis tool."
    }
  ],
  "id": "CVE-2026-89465",
  "lastModified": "2026-09-14T13:19:02.870",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-11T20:19:27.533",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1b9978433c61a9b46e48832a1ebceee1cf5c9eb4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3e7a1ebc32fad5a558254a478efd401c17a24381"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/442c60c08ec23ac45da0a58877cab05e0a58f4ea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7323e562f6961e4b7bce3225cde4ecbc78260deb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-89465 (GCVE-0-2026-89465)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:43 – Updated: 2026-09-14 12:00

Title

power: supply: rt9455: quiesce delayed work before teardown

Summary

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/442c60c08ec23ac45…
https://git.kernel.org/stable/c/df67c7a2fff8414aa…
https://git.kernel.org/stable/c/1b9978433c61a9b46…
https://git.kernel.org/stable/c/7323e562f6961e4b7…
https://git.kernel.org/stable/c/3e7a1ebc32fad5a55…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e86d69dd786e94046b8f5be7df1b9a8226a40b2a , < 442c60c08ec23ac45da0a58877cab05e0a58f4ea (git) Affected: e86d69dd786e94046b8f5be7df1b9a8226a40b2a , < df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02 (git) Affected: e86d69dd786e94046b8f5be7df1b9a8226a40b2a , < 1b9978433c61a9b46e48832a1ebceee1cf5c9eb4 (git) Affected: e86d69dd786e94046b8f5be7df1b9a8226a40b2a , < 7323e562f6961e4b7bce3225cde4ecbc78260deb (git) Affected: e86d69dd786e94046b8f5be7df1b9a8226a40b2a , < 3e7a1ebc32fad5a558254a478efd401c17a24381 (git)
Linux	Linux	Affected: 4.2 Unaffected: 0 , < 4.2 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.109 , ≤ 6.12.* (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/rt9455_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "442c60c08ec23ac45da0a58877cab05e0a58f4ea",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "1b9978433c61a9b46e48832a1ebceee1cf5c9eb4",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "7323e562f6961e4b7bce3225cde4ecbc78260deb",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            },
            {
              "lessThan": "3e7a1ebc32fad5a558254a478efd401c17a24381",
              "status": "affected",
              "version": "e86d69dd786e94046b8f5be7df1b9a8226a40b2a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/rt9455_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
              "lessThan": "4.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: rt9455: quiesce delayed work before teardown\n\nThe threaded IRQ handler can queue pwr_rdy_work,\nmax_charging_time_work and batt_presence_work.  pwr_rdy_work and\nbatt_presence_work can also queue max_charging_time_work, while\nbatt_presence_work can requeue itself.\n\nrt9455_remove() cancels max_charging_time_work before\nbatt_presence_work.  The latter can therefore queue\nmax_charging_time_work after it has already been cancelled:\n\n  rt9455_remove()                   workqueue\n    cancel pwr_rdy_work\n    cancel max_charging_time_work\n                                      batt_presence_work queues\n                                        max_charging_time_work\n    cancel batt_presence_work\n    return\n    devres frees rt9455_info\n                                      max_charging_time_work dereferences\n                                        rt9455_info\n\nThe IRQ also remains registered until devres cleanup and can queue more\nwork after any of the cancellation calls.  If rt9455_hw_init() fails\nafter the IRQ has been requested, probe returns without cancelling work\nthat may already have been queued.  A pending callback can then access\nrt9455_info after it has been freed.\n\nRegister rt9455_cancel_all_delayed_works() through\ndevm_add_action_or_reset() right after devm_power_supply_register().\ndevres invokes the action in reverse registration order, after the\nmanaged IRQ has been freed and before rt9455_info is released, so the\ndelayed works are drained in both rt9455_remove() and the probe error\npath.  Cancel pwr_rdy_work and batt_presence_work before\nmax_charging_time_work because both can queue the latter.\n\nThis issue was found by an in-house static analysis tool."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The UAF is reached only when the I2C RT9455 charger is torn down locally (sysfs unbind, rmmod, or shutdown/reboot) so delayed work runs after rt9455_info is freed; charger IRQs come from the on-chip GPIO, not from any network protocol.\nAC:L - The attacker controls both sides of the race: they start teardown while USB plug/unplug IRQs or already-queued pwr_rdy_work/batt_presence_work (1s/60s, self-requeue) re-arm work after cancel; the delayed callbacks make the UAF window reliable, not layout-dependent.\nPR:N - On battery-powered devices with this IC, brief physical possession is enough to force power-off/reboot with no Linux account while charger IRQs fire during remove, as for the prior RT9455 teardown UAF (CVE-2026-46270); CAP_SYS_ADMIN unbind is only an alternate path.\nUI:N - No victim action is required; the attacker performs teardown and any charging-port manipulation themselves, without the victim opening files, mounting filesystems, or approving prompts.\nS:U - The UAF corrupts kernel heap inside the same kernel security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Work callbacks container_of() a freed rt9455_info and then read client, regmap, and charger pointers, a classic use-after-free that yields arbitrary kernel reads after heap reuse.\nI:H - The same callbacks write through the freed object (queue_delayed_work, power_supply_changed, regmap_field_write), enabling heap-spray arbitrary writes and control-flow hijack.\nA:H - Use-after-free of driver private data from workqueue context causes a kernel oops or panic even when the UAF is not fully turned into a write primitive."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T12:00:04.241Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/442c60c08ec23ac45da0a58877cab05e0a58f4ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b9978433c61a9b46e48832a1ebceee1cf5c9eb4"
        },
        {
          "url": "https://git.kernel.org/stable/c/7323e562f6961e4b7bce3225cde4ecbc78260deb"
        },
        {
          "url": "https://git.kernel.org/stable/c/3e7a1ebc32fad5a558254a478efd401c17a24381"
        }
      ],
      "title": "power: supply: rt9455: quiesce delayed work before teardown",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89465",
    "datePublished": "2026-09-11T19:43:25.950Z",
    "dateReserved": "2026-09-11T19:38:34.709Z",
    "dateUpdated": "2026-09-14T12:00:04.241Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.