fkie_cve-2025-40157
Vulnerability from fkie_nvd
Published
2025-11-12 11:15
Modified
2025-11-12 16:19
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
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


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{
  "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": "2025-11-12T16:19:12.850",
  "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": "Awaiting Analysis"
}


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