CVE-2025-40216 (GCVE-0-2025-40216)
Vulnerability from cvelistv5
Published
2025-12-04 14:14
Modified
2025-12-04 14:14
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: don't rely on user vaddr alignment There is no guaranteed alignment for user pointers, however the calculation of an offset of the first page into a folio after coalescing uses some weird bit mask logic, get rid of it.
References
Impacted products
Vendor Product Version
Linux Linux Version: a8edbb424b1391b077407c75d8f5d2ede77aa70d
Version: a8edbb424b1391b077407c75d8f5d2ede77aa70d
Version: a8edbb424b1391b077407c75d8f5d2ede77aa70d
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{
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          "programFiles": [
            "io_uring/rsrc.c",
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rsrc: don\u0027t rely on user vaddr alignment\n\nThere is no guaranteed alignment for user pointers, however the\ncalculation of an offset of the first page into a folio after coalescing\nuses some weird bit mask logic, get rid of it."
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      "providerMetadata": {
        "dateUpdated": "2025-12-04T14:14:14.690Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b"
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    "cveId": "CVE-2025-40216",
    "datePublished": "2025-12-04T14:14:14.690Z",
    "dateReserved": "2025-04-16T07:20:57.179Z",
    "dateUpdated": "2025-12-04T14:14:14.690Z",
    "state": "PUBLISHED"
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  }
}


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