{"id":"CVE-2025-40157","state":"PUBLISHED","title":"EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller","description":"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't 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.","publishedAt":"2025-11-12T10:23:29.258Z","updatedAt":"2026-05-11T21:43:50.466Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"8100b6c0f9089d5b156642b81270ce27fff17490","versionType":"git"},{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"1652f14cf3bef5a4baa232de954fc22bdcaa78fe","versionType":"git"},{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"c20da24272f1ac79e9f9083bba577d049cd02bbb","versionType":"git"},{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"2e6fe1bbefd9c059c3787d1c620fe67343a94dff","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/edac/i10nm_base.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.3","versionType":"semver"},{"version":"6.6.112","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.53","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.3","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/edac/i10nm_base.c"]}],"references":["https://git.kernel.org/stable/c/8100b6c0f9089d5b156642b81270ce27fff17490","https://git.kernel.org/stable/c/1652f14cf3bef5a4baa232de954fc22bdcaa78fe","https://git.kernel.org/stable/c/c20da24272f1ac79e9f9083bba577d049cd02bbb","https://git.kernel.org/stable/c/2e6fe1bbefd9c059c3787d1c620fe67343a94dff"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40157.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40157","state":"PUBLISHED","datePublished":"2025-11-12T10:23:29.258Z","dateUpdated":"2026-05-11T21:43:50.466Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.176Z"},"containers":{"cna":{"title":"EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller","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't 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"8100b6c0f9089d5b156642b81270ce27fff17490","versionType":"git"},{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"1652f14cf3bef5a4baa232de954fc22bdcaa78fe","versionType":"git"},{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"c20da24272f1ac79e9f9083bba577d049cd02bbb","versionType":"git"},{"version":"ba987eaaabf99b462cdfed86274e3455d5126349","status":"affected","lessThan":"2e6fe1bbefd9c059c3787d1c620fe67343a94dff","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/edac/i10nm_base.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.3","versionType":"semver"},{"version":"6.6.112","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.53","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.3","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/edac/i10nm_base.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:43:50.466Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.6.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.12.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.17.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}