CVE-2025-21724 (GCVE-0-2025-21724)
Vulnerability from cvelistv5
Published
2025-02-27 02:07
Modified
2025-05-04 07:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index() Resolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index() where shifting the constant "1" (of type int) by bitmap->mapped.pgshift (an unsigned long value) could result in undefined behavior. The constant "1" defaults to a 32-bit "int", and when "pgshift" exceeds 31 (e.g., pgshift = 63) the shift operation overflows, as the result cannot be represented in a 32-bit type. To resolve this, the constant is updated to "1UL", promoting it to an unsigned long type to match the operand's type.
References
Impacted products
Vendor Product Version
Linux Linux Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
Version: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/iova_bitmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "44d9c94b7a3f29a3e07c4753603a35e9b28842a3",
              "status": "affected",
              "version": "58ccf0190d19d9a8a41f8a02b9e06742b58df4a1",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
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              "versionType": "git"
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            {
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/iova_bitmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.129",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.76",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.129",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.76",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.13",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.2",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()\n\nResolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index()\nwhere shifting the constant \"1\" (of type int) by bitmap-\u003emapped.pgshift\n(an unsigned long value) could result in undefined behavior.\n\nThe constant \"1\" defaults to a 32-bit \"int\", and when \"pgshift\" exceeds\n31 (e.g., pgshift = 63) the shift operation overflows, as the result\ncannot be represented in a 32-bit type.\n\nTo resolve this, the constant is updated to \"1UL\", promoting it to an\nunsigned long type to match the operand\u0027s type."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:19:48.785Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6"
        },
        {
          "url": "https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c"
        }
      ],
      "title": "iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21724",
    "datePublished": "2025-02-27T02:07:31.630Z",
    "dateReserved": "2024-12-29T08:45:45.754Z",
    "dateUpdated": "2025-05-04T07:19:48.785Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21724\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-27T02:15:16.113\",\"lastModified\":\"2025-02-27T02:15:16.113\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()\\n\\nResolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index()\\nwhere shifting the constant \\\"1\\\" (of type int) by bitmap-\u003emapped.pgshift\\n(an unsigned long value) could result in undefined behavior.\\n\\nThe constant \\\"1\\\" defaults to a 32-bit \\\"int\\\", and when \\\"pgshift\\\" exceeds\\n31 (e.g., pgshift = 63) the shift operation overflows, as the result\\ncannot be represented in a 32-bit type.\\n\\nTo resolve this, the constant is updated to \\\"1UL\\\", promoting it to an\\nunsigned long type to match the operand\u0027s type.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommufd/iova_bitmap: Se soluciona el problema de desplazamiento fuera de los l\u00edmites en iova_bitmap_offset_to_index() Se soluciona un problema de desplazamiento fuera de los l\u00edmites de UBSAN en iova_bitmap_offset_to_index() donde desplazar la constante \\\"1\\\" (de tipo int) por bitmap-\u0026gt;mapped.pgshift (un valor unsigned long) podr\u00eda resultar en un comportamiento indefinido. La constante \\\"1\\\" tiene como valor predeterminado un \\\"int\\\" de 32 bits, y cuando \\\"pgshift\\\" supera los 31 (por ejemplo, pgshift = 63) la operaci\u00f3n de desplazamiento se desborda, ya que el resultado no se puede representar en un tipo de 32 bits. Para resolver esto, la constante se actualiza a \\\"1UL\\\", promovi\u00e9ndola a un tipo unsigned long para que coincida con el tipo del operando.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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