CVE-2023-53636 (GCVE-0-2023-53636)
Vulnerability from cvelistv5
Published
2025-10-07 15:19
Modified
2025-10-07 15:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: clk: microchip: fix potential UAF in auxdev release callback Similar to commit 1c11289b34ab ("peci: cpu: Fix use-after-free in adev_release()"), the auxiliary device is not torn down in the correct order. If auxiliary_device_add() fails, the release callback will be called twice, resulting in a UAF. Due to timing, the auxdev code in this driver "took inspiration" from the aforementioned commit, and thus its bugs too! Moving auxiliary_device_uninit() to the unregister callback instead avoids the issue.
References
Impacted products
Vendor Product Version
Linux Linux Version: b56bae2dd6fda6baf3bb74af3812676eebdd52f2
Version: b56bae2dd6fda6baf3bb74af3812676eebdd52f2
Version: b56bae2dd6fda6baf3bb74af3812676eebdd52f2
Version: b56bae2dd6fda6baf3bb74af3812676eebdd52f2
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{
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          "programFiles": [
            "drivers/clk/microchip/clk-mpfs.c"
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: microchip: fix potential UAF in auxdev release callback\n\nSimilar to commit 1c11289b34ab (\"peci: cpu: Fix use-after-free in\nadev_release()\"), the auxiliary device is not torn down in the correct\norder. If auxiliary_device_add() fails, the release callback will be\ncalled twice, resulting in a UAF. Due to timing, the auxdev code in this\ndriver \"took inspiration\" from the aforementioned commit, and thus its\nbugs too!\n\nMoving auxiliary_device_uninit() to the unregister callback instead\navoids the issue."
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      "providerMetadata": {
        "dateUpdated": "2025-10-07T15:19:37.655Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/7455b7007b9e93bcc2bc9c1c6c73a228e3152069"
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      "title": "clk: microchip: fix potential UAF in auxdev release callback",
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    "cveId": "CVE-2023-53636",
    "datePublished": "2025-10-07T15:19:37.655Z",
    "dateReserved": "2025-10-07T15:16:59.657Z",
    "dateUpdated": "2025-10-07T15:19:37.655Z",
    "state": "PUBLISHED"
  },
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  }
}


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