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FKIE_CVE-2026-89475

Vulnerability from fkie_nvd - Published: 2026-09-11 20:19 - Updated: 2026-09-14 13:19
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47ccbad210f48721c30d69d65b83dc9fff919ca9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d2eb93975c07b0169a3287efc1ae3b60cf52d8e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/861ec73ce86e2ca18082cc7be4f140a5bbdf1428
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9d34c9d660c3d0931d2cc749c46c47cf31f96e48
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a279e64c907f5638bb34cb8e2c9285798cf5f690
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f495808cdd6d9576965787cf6d9737d0b0e86b73
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/bq24257_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8",
              "status": "affected",
              "version": "2219a935963e5eeb19e5abfb99475fcc06bbb804",
              "versionType": "git"
            },
            {
              "lessThan": "a279e64c907f5638bb34cb8e2c9285798cf5f690",
              "status": "affected",
              "version": "2219a935963e5eeb19e5abfb99475fcc06bbb804",
              "versionType": "git"
            },
            {
              "lessThan": "6d2eb93975c07b0169a3287efc1ae3b60cf52d8e",
              "status": "affected",
              "version": "2219a935963e5eeb19e5abfb99475fcc06bbb804",
              "versionType": "git"
            },
            {
              "lessThan": "861ec73ce86e2ca18082cc7be4f140a5bbdf1428",
              "status": "affected",
              "version": "2219a935963e5eeb19e5abfb99475fcc06bbb804",
              "versionType": "git"
            },
            {
              "lessThan": "f495808cdd6d9576965787cf6d9737d0b0e86b73",
              "status": "affected",
              "version": "2219a935963e5eeb19e5abfb99475fcc06bbb804",
              "versionType": "git"
            },
            {
              "lessThan": "47ccbad210f48721c30d69d65b83dc9fff919ca9",
              "status": "affected",
              "version": "2219a935963e5eeb19e5abfb99475fcc06bbb804",
              "versionType": "git"
            },
            {
              "lessThan": "9d34c9d660c3d0931d2cc749c46c47cf31f96e48",
              "status": "affected",
              "version": "2219a935963e5eeb19e5abfb99475fcc06bbb804",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/bq24257_charger.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
              "lessThan": "4.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-89475",
  "lastModified": "2026-09-14T13:19:03.853",
  "metrics": {},
  "published": "2026-09-11T20:19:28.807",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/47ccbad210f48721c30d69d65b83dc9fff919ca9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6d2eb93975c07b0169a3287efc1ae3b60cf52d8e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/861ec73ce86e2ca18082cc7be4f140a5bbdf1428"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9d34c9d660c3d0931d2cc749c46c47cf31f96e48"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a279e64c907f5638bb34cb8e2c9285798cf5f690"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f495808cdd6d9576965787cf6d9737d0b0e86b73"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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