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FKIE_CVE-2026-89463

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: 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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/00c19f8a9a58a318a76fd6f735a8aab3f8ead393
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ec4d203ecb06d327af67e32097fe8f774838a40
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35242c93d35f391afdc84cef6236b8ad57f1df24
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/39b60d615dfa1725c235351fb12bc72e5f8a8d32
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4ca2a4678202f15eb790eb7f1d562061709caea7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/609af0ceeaefdfa42cd01dd060b20f2e41f9a232
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9a7bb801c443a4d9fc623c4a47deb53accb70bb
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/ucs1002_power.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "00c19f8a9a58a318a76fd6f735a8aab3f8ead393",
              "status": "affected",
              "version": "81196e2e57fc5b88f6b8ca98372a3dde047aa49d",
              "versionType": "git"
            },
            {
              "lessThan": "a9a7bb801c443a4d9fc623c4a47deb53accb70bb",
              "status": "affected",
              "version": "81196e2e57fc5b88f6b8ca98372a3dde047aa49d",
              "versionType": "git"
            },
            {
              "lessThan": "2ec4d203ecb06d327af67e32097fe8f774838a40",
              "status": "affected",
              "version": "81196e2e57fc5b88f6b8ca98372a3dde047aa49d",
              "versionType": "git"
            },
            {
              "lessThan": "4ca2a4678202f15eb790eb7f1d562061709caea7",
              "status": "affected",
              "version": "81196e2e57fc5b88f6b8ca98372a3dde047aa49d",
              "versionType": "git"
            },
            {
              "lessThan": "39b60d615dfa1725c235351fb12bc72e5f8a8d32",
              "status": "affected",
              "version": "81196e2e57fc5b88f6b8ca98372a3dde047aa49d",
              "versionType": "git"
            },
            {
              "lessThan": "35242c93d35f391afdc84cef6236b8ad57f1df24",
              "status": "affected",
              "version": "81196e2e57fc5b88f6b8ca98372a3dde047aa49d",
              "versionType": "git"
            },
            {
              "lessThan": "609af0ceeaefdfa42cd01dd060b20f2e41f9a232",
              "status": "affected",
              "version": "81196e2e57fc5b88f6b8ca98372a3dde047aa49d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/ucs1002_power.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "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: 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."
    }
  ],
  "id": "CVE-2026-89463",
  "lastModified": "2026-09-14T13:19:02.620",
  "metrics": {},
  "published": "2026-09-11T20:19:27.283",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/00c19f8a9a58a318a76fd6f735a8aab3f8ead393"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2ec4d203ecb06d327af67e32097fe8f774838a40"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/35242c93d35f391afdc84cef6236b8ad57f1df24"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/39b60d615dfa1725c235351fb12bc72e5f8a8d32"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4ca2a4678202f15eb790eb7f1d562061709caea7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/609af0ceeaefdfa42cd01dd060b20f2e41f9a232"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a9a7bb801c443a4d9fc623c4a47deb53accb70bb"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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