ghsa-rr63-42vx-4m23
Vulnerability from github
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.
{
"affected": [],
"aliases": [
"CVE-2025-40157"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-12T11:15:45Z",
"severity": null
},
"details": "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": "GHSA-rr63-42vx-4m23",
"modified": "2025-11-12T12:30:28Z",
"published": "2025-11-12T12:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40157"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1652f14cf3bef5a4baa232de954fc22bdcaa78fe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2e6fe1bbefd9c059c3787d1c620fe67343a94dff"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8100b6c0f9089d5b156642b81270ce27fff17490"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c20da24272f1ac79e9f9083bba577d049cd02bbb"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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