CVE-2026-89473

Full vulnerability record from the local CVENow database.

Description

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. Found by code review.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-11 20:19:28.530000

Last modified

2026-10-19 09:17:40.167000

View original CVE JSON

{
  "id": "CVE-2026-89473",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-11T20:19:28.530",
  "lastModified": "2026-10-19T09:17:40.167",
  "vulnStatus": "Received",
  "cveTags": [],
  "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."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/power/supply/bq25890_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "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",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/power/supply/bq25890_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.3",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.3",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.109",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.50",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.4",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "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"
    }
  ]
}