CVE-2025-38072 (GCVE-0-2025-38072)
Vulnerability from cvelistv5
Published
2025-06-18 09:33
Modified
2025-06-18 09:33
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: libnvdimm/labels: Fix divide error in nd_label_data_init() If a faulty CXL memory device returns a broken zero LSA size in its memory device information (Identify Memory Device (Opcode 4000h), CXL spec. 3.1, 8.2.9.9.1.1), a divide error occurs in the libnvdimm driver: Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:nd_label_data_init+0x10e/0x800 [libnvdimm] Code and flow: 1) CXL Command 4000h returns LSA size = 0 2) config_size is assigned to zero LSA size (CXL pmem driver): drivers/cxl/pmem.c: .config_size = mds->lsa_size, 3) max_xfer is set to zero (nvdimm driver): drivers/nvdimm/label.c: max_xfer = min_t(size_t, ndd->nsarea.max_xfer, config_size); 4) A subsequent DIV_ROUND_UP() causes a division by zero: drivers/nvdimm/label.c: /* Make our initial read size a multiple of max_xfer size */ drivers/nvdimm/label.c: read_size = min(DIV_ROUND_UP(read_size, max_xfer) * max_xfer, drivers/nvdimm/label.c- config_size); Fix this by checking the config size parameter by extending an existing check.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvdimm/label.c"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibnvdimm/labels: Fix divide error in nd_label_data_init()\n\nIf a faulty CXL memory device returns a broken zero LSA size in its\nmemory device information (Identify Memory Device (Opcode 4000h), CXL\nspec. 3.1, 8.2.9.9.1.1), a divide error occurs in the libnvdimm\ndriver:\n\n Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI\n RIP: 0010:nd_label_data_init+0x10e/0x800 [libnvdimm]\n\nCode and flow:\n\n1) CXL Command 4000h returns LSA size = 0\n2) config_size is assigned to zero LSA size (CXL pmem driver):\n\ndrivers/cxl/pmem.c:             .config_size = mds-\u003elsa_size,\n\n3) max_xfer is set to zero (nvdimm driver):\n\ndrivers/nvdimm/label.c: max_xfer = min_t(size_t, ndd-\u003ensarea.max_xfer, config_size);\n\n4) A subsequent DIV_ROUND_UP() causes a division by zero:\n\ndrivers/nvdimm/label.c: /* Make our initial read size a multiple of max_xfer size */\ndrivers/nvdimm/label.c: read_size = min(DIV_ROUND_UP(read_size, max_xfer) * max_xfer,\ndrivers/nvdimm/label.c-                 config_size);\n\nFix this by checking the config size parameter by extending an\nexisting check."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T09:33:48.666Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2bd4a938d2eda96ab7288b8fa5aae84a1de8c4ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/396c46d3f59a18ebcc500640e749f16e197d472b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f49c337037df029440a8390380dd35d2cf5924d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/db1aef51b8e66a77f76b1250b914589c31a0a0ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/ea3d95e05e97ea20fd6513f647393add16fce3b2"
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        {
          "url": "https://git.kernel.org/stable/c/1d1e1efad1cf049e888bf175a5c6be85d792620c"
        },
        {
          "url": "https://git.kernel.org/stable/c/e14347f647ca6d76fe1509b6703e340f2d5e2716"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef1d3455bbc1922f94a91ed58d3d7db440652959"
        }
      ],
      "title": "libnvdimm/labels: Fix divide error in nd_label_data_init()",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38072",
    "datePublished": "2025-06-18T09:33:48.666Z",
    "dateReserved": "2025-04-16T04:51:23.980Z",
    "dateUpdated": "2025-06-18T09:33:48.666Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38072\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T10:15:40.583\",\"lastModified\":\"2025-06-18T13:46:52.973\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibnvdimm/labels: Fix divide error in nd_label_data_init()\\n\\nIf a faulty CXL memory device returns a broken zero LSA size in its\\nmemory device information (Identify Memory Device (Opcode 4000h), CXL\\nspec. 3.1, 8.2.9.9.1.1), a divide error occurs in the libnvdimm\\ndriver:\\n\\n Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI\\n RIP: 0010:nd_label_data_init+0x10e/0x800 [libnvdimm]\\n\\nCode and flow:\\n\\n1) CXL Command 4000h returns LSA size = 0\\n2) config_size is assigned to zero LSA size (CXL pmem driver):\\n\\ndrivers/cxl/pmem.c:             .config_size = mds-\u003elsa_size,\\n\\n3) max_xfer is set to zero (nvdimm driver):\\n\\ndrivers/nvdimm/label.c: max_xfer = min_t(size_t, ndd-\u003ensarea.max_xfer, config_size);\\n\\n4) A subsequent DIV_ROUND_UP() causes a division by zero:\\n\\ndrivers/nvdimm/label.c: /* Make our initial read size a multiple of max_xfer size */\\ndrivers/nvdimm/label.c: read_size = min(DIV_ROUND_UP(read_size, max_xfer) * max_xfer,\\ndrivers/nvdimm/label.c-                 config_size);\\n\\nFix this by checking the config size parameter by extending an\\nexisting check.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1d1e1efad1cf049e888bf175a5c6be85d792620c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2bd4a938d2eda96ab7288b8fa5aae84a1de8c4ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/396c46d3f59a18ebcc500640e749f16e197d472b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/db1aef51b8e66a77f76b1250b914589c31a0a0ed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e14347f647ca6d76fe1509b6703e340f2d5e2716\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ea3d95e05e97ea20fd6513f647393add16fce3b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef1d3455bbc1922f94a91ed58d3d7db440652959\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f49c337037df029440a8390380dd35d2cf5924d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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