CVE-2025-40157 (GCVE-0-2025-40157)
Vulnerability from cvelistv5
Published
2025-11-12 10:23
Modified
2025-12-01 06:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller When loading the i10nm_edac driver on some Intel Granite Rapids servers, a call trace may appear as follows: UBSAN: shift-out-of-bounds in drivers/edac/skx_common.c:453:16 shift exponent -66 is negative ... __ubsan_handle_shift_out_of_bounds+0x1e3/0x390 skx_get_dimm_info.cold+0x47/0xd40 [skx_edac_common] i10nm_get_dimm_config+0x23e/0x390 [i10nm_edac] skx_register_mci+0x159/0x220 [skx_edac_common] i10nm_init+0xcb0/0x1ff0 [i10nm_edac] ... This occurs because some BIOS may disable a memory controller if there aren't any memory DIMMs populated on this memory controller. The DIMMMTR register of this disabled memory controller contains the invalid value ~0, resulting in the call trace above. Fix this call trace by skipping DIMM enumeration on a disabled memory controller.
References
Impacted products
Vendor Product Version
Linux Linux Version: ba987eaaabf99b462cdfed86274e3455d5126349
Version: ba987eaaabf99b462cdfed86274e3455d5126349
Version: ba987eaaabf99b462cdfed86274e3455d5126349
Version: ba987eaaabf99b462cdfed86274e3455d5126349
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/edac/i10nm_base.c"
          ],
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          "vendor": "Linux",
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.112",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.53",
              "versionType": "semver"
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      "cpeApplicability": [
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                },
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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\nEDAC/i10nm: Skip DIMM enumeration on a disabled memory controller\n\nWhen loading the i10nm_edac driver on some Intel Granite Rapids servers,\na call trace may appear as follows:\n\n  UBSAN: shift-out-of-bounds in drivers/edac/skx_common.c:453:16\n  shift exponent -66 is negative\n  ...\n  __ubsan_handle_shift_out_of_bounds+0x1e3/0x390\n  skx_get_dimm_info.cold+0x47/0xd40 [skx_edac_common]\n  i10nm_get_dimm_config+0x23e/0x390 [i10nm_edac]\n  skx_register_mci+0x159/0x220 [skx_edac_common]\n  i10nm_init+0xcb0/0x1ff0 [i10nm_edac]\n  ...\n\nThis occurs because some BIOS may disable a memory controller if there\naren\u0027t any memory DIMMs populated on this memory controller. The DIMMMTR\nregister of this disabled memory controller contains the invalid value\n~0, resulting in the call trace above.\n\nFix this call trace by skipping DIMM enumeration on a disabled memory\ncontroller."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-01T06:19:08.224Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8100b6c0f9089d5b156642b81270ce27fff17490"
        },
        {
          "url": "https://git.kernel.org/stable/c/1652f14cf3bef5a4baa232de954fc22bdcaa78fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/c20da24272f1ac79e9f9083bba577d049cd02bbb"
        },
        {
          "url": "https://git.kernel.org/stable/c/2e6fe1bbefd9c059c3787d1c620fe67343a94dff"
        }
      ],
      "title": "EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40157",
    "datePublished": "2025-11-12T10:23:29.258Z",
    "dateReserved": "2025-04-16T07:20:57.176Z",
    "dateUpdated": "2025-12-01T06:19:08.224Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40157\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-11-12T11:15:45.763\",\"lastModified\":\"2025-11-12T16:19:12.850\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nEDAC/i10nm: Skip DIMM enumeration on a disabled memory controller\\n\\nWhen loading the i10nm_edac driver on some Intel Granite Rapids servers,\\na call trace may appear as follows:\\n\\n  UBSAN: shift-out-of-bounds in drivers/edac/skx_common.c:453:16\\n  shift exponent -66 is negative\\n  ...\\n  __ubsan_handle_shift_out_of_bounds+0x1e3/0x390\\n  skx_get_dimm_info.cold+0x47/0xd40 [skx_edac_common]\\n  i10nm_get_dimm_config+0x23e/0x390 [i10nm_edac]\\n  skx_register_mci+0x159/0x220 [skx_edac_common]\\n  i10nm_init+0xcb0/0x1ff0 [i10nm_edac]\\n  ...\\n\\nThis occurs because some BIOS may disable a memory controller if there\\naren\u0027t any memory DIMMs populated on this memory controller. The DIMMMTR\\nregister of this disabled memory controller contains the invalid value\\n~0, resulting in the call trace above.\\n\\nFix this call trace by skipping DIMM enumeration on a disabled memory\\ncontroller.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1652f14cf3bef5a4baa232de954fc22bdcaa78fe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2e6fe1bbefd9c059c3787d1c620fe67343a94dff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8100b6c0f9089d5b156642b81270ce27fff17490\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c20da24272f1ac79e9f9083bba577d049cd02bbb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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