FKIE_CVE-2025-40157

Vulnerability from fkie_nvd - Published: 2025-11-12 11:15 - Updated: 2026-06-17 09:21
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1652f14cf3bef5a4baa232de954fc22bdcaa78fe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2e6fe1bbefd9c059c3787d1c620fe67343a94dff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8100b6c0f9089d5b156642b81270ce27fff17490
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c20da24272f1ac79e9f9083bba577d049cd02bbb
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/edac/i10nm_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8100b6c0f9089d5b156642b81270ce27fff17490",
              "status": "affected",
              "version": "ba987eaaabf99b462cdfed86274e3455d5126349",
              "versionType": "git"
            },
            {
              "lessThan": "1652f14cf3bef5a4baa232de954fc22bdcaa78fe",
              "status": "affected",
              "version": "ba987eaaabf99b462cdfed86274e3455d5126349",
              "versionType": "git"
            },
            {
              "lessThan": "c20da24272f1ac79e9f9083bba577d049cd02bbb",
              "status": "affected",
              "version": "ba987eaaabf99b462cdfed86274e3455d5126349",
              "versionType": "git"
            },
            {
              "lessThan": "2e6fe1bbefd9c059c3787d1c620fe67343a94dff",
              "status": "affected",
              "version": "ba987eaaabf99b462cdfed86274e3455d5126349",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/edac/i10nm_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "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."
    }
  ],
  "id": "CVE-2025-40157",
  "lastModified": "2026-06-17T09:21:22.673",
  "metrics": {},
  "published": "2025-11-12T11:15:45.763",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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