CVE-2026-89463 (GCVE-0-2026-89463)
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: ucs1002: fix use-after-free on remove ucs1002 has no remove callback, so unbind runs entirely through devm. The alert IRQ handler queues the health_poll delayed work, and the work reschedules itself while the chip reports a bad-health condition. devm frees the alert IRQ, which only synchronizes the handler; it does not cancel the delayed work, which can then run after devm frees the driver data and dereference it. Register health_poll with devm_delayed_work_autocancel() before the alert IRQ is requested. devm then frees the IRQ before cancelling the work, so the handler can no longer queue it and the work is cancelled before the driver data is freed. This issue was found by an in-house static analysis tool.
References
Impacted products
Vendor Product Version
Linux Linux Version: 81196e2e57fc5b88f6b8ca98372a3dde047aa49d
Version: 81196e2e57fc5b88f6b8ca98372a3dde047aa49d
Version: 81196e2e57fc5b88f6b8ca98372a3dde047aa49d
Version: 81196e2e57fc5b88f6b8ca98372a3dde047aa49d
Version: 81196e2e57fc5b88f6b8ca98372a3dde047aa49d
Version: 81196e2e57fc5b88f6b8ca98372a3dde047aa49d
Version: 81196e2e57fc5b88f6b8ca98372a3dde047aa49d
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{
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          "programFiles": [
            "drivers/power/supply/ucs1002_power.c"
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: ucs1002: fix use-after-free on remove\n\nucs1002 has no remove callback, so unbind runs entirely through devm.\nThe alert IRQ handler queues the health_poll delayed work, and the work\nreschedules itself while the chip reports a bad-health condition.  devm\nfrees the alert IRQ, which only synchronizes the handler; it does not\ncancel the delayed work, which can then run after devm frees the driver\ndata and dereference it.\n\nRegister health_poll with devm_delayed_work_autocancel() before the\nalert IRQ is requested.  devm then frees the IRQ before cancelling the\nwork, so the handler can no longer queue it and the work is cancelled\nbefore the driver data is freed.\n\nThis issue was found by an in-house static analysis tool."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:47:12.553Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/00c19f8a9a58a318a76fd6f735a8aab3f8ead393"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9a7bb801c443a4d9fc623c4a47deb53accb70bb"
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        {
          "url": "https://git.kernel.org/stable/c/2ec4d203ecb06d327af67e32097fe8f774838a40"
        },
        {
          "url": "https://git.kernel.org/stable/c/4ca2a4678202f15eb790eb7f1d562061709caea7"
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        {
          "url": "https://git.kernel.org/stable/c/39b60d615dfa1725c235351fb12bc72e5f8a8d32"
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        },
        {
          "url": "https://git.kernel.org/stable/c/609af0ceeaefdfa42cd01dd060b20f2e41f9a232"
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      "title": "power: supply: ucs1002: fix use-after-free on remove",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89463",
    "datePublished": "2026-09-11T19:43:24.629Z",
    "dateReserved": "2026-09-11T19:38:34.708Z",
    "dateUpdated": "2026-10-19T08:47:12.553Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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