CVE-2025-21815 (GCVE-0-2025-21815)

Vulnerability from cvelistv5 – Published: 2025-02-27 20:04 – Updated: 2026-05-11 21:07
VLAI
Title
mm/compaction: fix UBSAN shift-out-of-bounds warning
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/compaction: fix UBSAN shift-out-of-bounds warning syzkaller reported a UBSAN shift-out-of-bounds warning of (1UL << order) in isolate_freepages_block(). The bogus compound_order can be any value because it is union with flags. Add back the MAX_PAGE_ORDER check to fix the warning.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3da0272a4c7d0d37b47b28e87014f421296fc2be , < 4491159774d973a9e2e998d25d8fbb20fada6dfa (git)
Affected: 3da0272a4c7d0d37b47b28e87014f421296fc2be , < 10b7d3eb535098ccd4c82a182a33655d8a0e5c88 (git)
Affected: 3da0272a4c7d0d37b47b28e87014f421296fc2be , < d1366e74342e75555af2648a2964deb2d5c92200 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.12.14 , ≤ 6.12.* (semver)
Unaffected: 6.13.3 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

{
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        }
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      "providerMetadata": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
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    "datePublished": "2025-02-27T20:04:14.733Z",
    "dateReserved": "2024-12-29T08:45:45.774Z",
    "dateUpdated": "2026-05-11T21:07:04.528Z",
    "state": "PUBLISHED"
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      "percentile": "0.09258"
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                ],
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                "versions": [
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                  },
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                ]
              }
            ],
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        "configurations": [
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/compaction: fix UBSAN shift-out-of-bounds warning\n\nsyzkaller reported a UBSAN shift-out-of-bounds warning of (1UL \u003c\u003c order)\nin isolate_freepages_block().  The bogus compound_order can be any value\nbecause it is union with flags.  Add back the MAX_PAGE_ORDER check to fix\nthe warning."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/compaction: se corrige la advertencia de cambio fuera de los l\u00edmites de UBSAN syzkaller inform\u00f3 una advertencia de cambio fuera de los l\u00edmites de UBSAN de (1UL \u0026lt;\u0026lt; order) en isolate_freepages_block(). El compuesto falso puede ser cualquier valor porque es una uni\u00f3n con indicadores. Vuelva a agregar la verificaci\u00f3n MAX_PAGE_ORDER para corregir la advertencia."
          }
        ],
        "id": "CVE-2025-21815",
        "lastModified": "2026-06-17T08:44:21.663",
        "metrics": {
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            {
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                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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        "published": "2025-02-27T20:16:04.063",
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            "tags": [
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        "vulnStatus": "Analyzed",
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                "lang": "en",
                "value": "CWE-125"
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      "cve": "CVE-2025-21815",
      "id": "CVE-2025-21815",
      "initial_release_date": "2025-02-27T00:00:00+00:00",
      "product_status:fixed": "307",
      "product_status:known_affected": "76",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mm/compaction: fix UBSAN shift-out-of-bounds warning",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21815.json",
      "version": "3"
    }
  }
}



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