CVE-2026-89475 (GCVE-0-2026-89475)
Vulnerability from cvelistv5
Published
2026-09-11 19:43
Modified
2026-10-30 12:31
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: power: supply: bq24257: fix use-after-free on remove The STAT-pin interrupt is devm-managed, so it stays armed until the devm cleanup that runs after remove() returns. remove() cancels bq->iilimit_setup_work while the threaded handler can still fire; that handler reschedules the work and dereferences bq, so the work runs against freed memory once devm frees bq. Make the delayed work device-managed with devm_delayed_work_autocancel(), registered before the interrupt request. The devm cleanup then releases the interrupt first, so the handler can no longer reschedule the work, and cancels the work before bq is freed. The explicit cancel_delayed_work_sync() in remove() is no longer needed and is dropped. Found by static analysis.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
Version: 2219a935963e5eeb19e5abfb99475fcc06bbb804
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{
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          "programFiles": [
            "drivers/power/supply/bq24257_charger.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq24257: fix use-after-free on remove\n\nThe STAT-pin interrupt is devm-managed, so it stays armed until the devm\ncleanup that runs after remove() returns. remove() cancels\nbq-\u003eiilimit_setup_work while the threaded handler can still fire; that\nhandler reschedules the work and dereferences bq, so the work runs\nagainst freed memory once devm frees bq.\n\nMake the delayed work device-managed with devm_delayed_work_autocancel(),\nregistered before the interrupt request. The devm cleanup then releases\nthe interrupt first, so the handler can no longer reschedule the work,\nand cancels the work before bq is freed. The explicit\ncancel_delayed_work_sync() in remove() is no longer needed and is dropped.\n\nFound by static analysis."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:31:51.693Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9aace29bbcfa64450c53773ed2f20e95987b3690"
        },
        {
          "url": "https://git.kernel.org/stable/c/9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/a279e64c907f5638bb34cb8e2c9285798cf5f690"
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        {
          "url": "https://git.kernel.org/stable/c/6d2eb93975c07b0169a3287efc1ae3b60cf52d8e"
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          "url": "https://git.kernel.org/stable/c/861ec73ce86e2ca18082cc7be4f140a5bbdf1428"
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          "url": "https://git.kernel.org/stable/c/f495808cdd6d9576965787cf6d9737d0b0e86b73"
        },
        {
          "url": "https://git.kernel.org/stable/c/47ccbad210f48721c30d69d65b83dc9fff919ca9"
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        {
          "url": "https://git.kernel.org/stable/c/9d34c9d660c3d0931d2cc749c46c47cf31f96e48"
        }
      ],
      "title": "power: supply: bq24257: fix use-after-free on remove",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89475",
    "datePublished": "2026-09-11T19:43:32.537Z",
    "dateReserved": "2026-09-11T19:38:34.710Z",
    "dateUpdated": "2026-10-30T12:31:51.693Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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