CVE-2026-89473

Estado: RecibidaSin puntuar—

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

power: supply: bq25890: Fix power_supply reference leak

bq25890_fw_probe() acquires a reference to a secondary charger using power_supply_get_by_name(), but the reference is not released on later probe failures or on driver detach.

In particular, failures after bq25890_fw_probe() returns successfully, such as a failure in bq25890_hw_init(), also leak the reference.

Register a device-managed cleanup action immediately after acquiring the secondary charger. This releases the reference on all subsequent probe failures and on driver detach.

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Found by code review.

CVSS

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

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.20%
Percentil entre todas las CVEs puntuadas: 9
Fecha de la puntuación: 5/10/2026

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 Kernel^AI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-89473",
  "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": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d",
              "lessThan": "976c10d883a02968f3f58be0cee499d1fd2ba68a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d",
              "lessThan": "81b558afda9321c1a70971a39071d156f3e26950",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d",
              "lessThan": "238320ad029a3eedabb86286a28cab55bca629b9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d",
              "lessThan": "58f1025eca92734eadc063715b98f62538286468",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d54bf877fd878ee45cbc88d399fb98b0b1c4484d",
              "lessThan": "863c32a83e4235eb0cbf6106f2b124e645302156",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/power/supply/bq25890_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": "6.3"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.3",
              "versionType": "semver"
            },
            {
              "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/bq25890_charger.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-11T20:19:28.530",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/238320ad029a3eedabb86286a28cab55bca629b9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/58f1025eca92734eadc063715b98f62538286468",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/81b558afda9321c1a70971a39071d156f3e26950",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/863c32a83e4235eb0cbf6106f2b124e645302156",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/976c10d883a02968f3f58be0cee499d1fd2ba68a",
      "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: bq25890: Fix power_supply reference leak\n\nbq25890_fw_probe() acquires a reference to a secondary charger using\npower_supply_get_by_name(), but the reference is not released on later\nprobe failures or on driver detach.\n\nIn particular, failures after bq25890_fw_probe() returns successfully,\nsuch as a failure in bq25890_hw_init(), also leak the reference.\n\nRegister a device-managed cleanup action immediately after acquiring\nthe secondary charger. This releases the reference on all subsequent\nprobe failures and on driver detach.\n\nFound by code review."
    }
  ],
  "lastModified": "2026-09-14T13:19:03.620",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}