CVE-2026-89473 (GCVE-0-2026-89473)
Vulnerability from cvelistv5
Published
2026-09-11 19:43
Modified
2026-10-19 08:47
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: d54bf877fd878ee45cbc88d399fb98b0b1c4484d
Version: d54bf877fd878ee45cbc88d399fb98b0b1c4484d
Version: d54bf877fd878ee45cbc88d399fb98b0b1c4484d
Version: d54bf877fd878ee45cbc88d399fb98b0b1c4484d
Version: d54bf877fd878ee45cbc88d399fb98b0b1c4484d
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/bq25890_charger.c"
          ],
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
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                },
                {
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:47:22.219Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/976c10d883a02968f3f58be0cee499d1fd2ba68a"
        },
        {
          "url": "https://git.kernel.org/stable/c/81b558afda9321c1a70971a39071d156f3e26950"
        },
        {
          "url": "https://git.kernel.org/stable/c/238320ad029a3eedabb86286a28cab55bca629b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/58f1025eca92734eadc063715b98f62538286468"
        },
        {
          "url": "https://git.kernel.org/stable/c/863c32a83e4235eb0cbf6106f2b124e645302156"
        }
      ],
      "title": "power: supply: bq25890: Fix power_supply reference leak",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89473",
    "datePublished": "2026-09-11T19:43:31.214Z",
    "dateReserved": "2026-09-11T19:38:34.710Z",
    "dateUpdated": "2026-10-19T08:47:22.219Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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