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CVE-2026-89474

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

power: supply: bq256xx: drain usb_work before freeing the charger

The USB-PHY notifier queues usb_work, whose handler calls power_supply_changed(bq->charger). The reset devm action only unregisters the notifier and was registered before the power supplies, so devm frees bq->charger on unwind before the action runs; a usb_work still queued can then dereference it.

Register the reset action after the power supplies, so it unregisters the notifiers and drains usb_work before the supplies are released. Initialize usb_work and obtain the PHY references before registering the notifiers, so the worker cannot run before the supplies exist.

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Found by static analysis.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-89474",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
              "lessThan": "9dcfdf6c598301b278f0b3490eb2bf4f600524e2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
              "lessThan": "fd08d4dbbec07a44f01b0ddb041912be0dc88f8c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
              "lessThan": "2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
              "lessThan": "9a467bd1e6811011026ad4c8de701b940d88a00c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
              "lessThan": "9e1aba34df9a87d53460888e05718717c0f69343",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
              "lessThan": "c8addb842ae8dcf69c15fc976e33e3bd538a41d7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
              "lessThan": "2dd6cd823777bea6d9a880a12a92a73ec76aee0b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/power/supply/bq256xx_charger.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.12",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/power/supply/bq256xx_charger.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-11T20:19:28.687",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq256xx: drain usb_work before freeing the charger\n\nThe USB-PHY notifier queues usb_work, whose handler calls\npower_supply_changed(bq->charger). The reset devm action only unregisters\nthe notifier and was registered before the power supplies, so devm frees\nbq->charger on unwind before the action runs; a usb_work still queued can\nthen dereference it.\n\nRegister the reset action after the power supplies, so it unregisters\nthe notifiers and drains usb_work before the supplies are released.\nInitialize usb_work and obtain the PHY references before registering\nthe notifiers, so the worker cannot run before the supplies exist.\n\nFound by static analysis."
    }
  ],
  "lastModified": "2026-09-14T13:19:03.733",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}