{"api_version":"1","generated_at":"2026-08-22T08:15:02+00:00","cve":"CVE-2023-53474","urls":{"html":"https://cve.report/CVE-2023-53474","api":"https://cve.report/api/cve/CVE-2023-53474.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-53474","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-53474"},"summary":{"title":"x86/MCE/AMD: Use an u64 for bank_map","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/MCE/AMD: Use an u64 for bank_map\n\nThee maximum number of MCA banks is 64 (MAX_NR_BANKS), see\n\n  a0bc32b3cacf (\"x86/mce: Increase maximum number of banks to 64\").\n\nHowever, the bank_map which contains a bitfield of which banks to\ninitialize is of type unsigned int and that overflows when those bit\nnumbers are >= 32, leading to UBSAN complaining correctly:\n\n  UBSAN: shift-out-of-bounds in arch/x86/kernel/cpu/mce/amd.c:1365:38\n  shift exponent 32 is too large for 32-bit type 'int'\n\nChange the bank_map to a u64 and use the proper BIT_ULL() macro when\nmodifying bits in there.\n\n  [ bp: Rewrite commit message. ]","state":"PUBLISHED","assigner":"Linux","published_at":"2025-10-01 12:15:49","updated_at":"2026-08-04 10:19:07"},"problem_types":["CWE-190"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/9669fa17287c3af2bbd4868d4c8fdd9e57f8332e","name":"https://git.kernel.org/stable/c/9669fa17287c3af2bbd4868d4c8fdd9e57f8332e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/11c58a0c1937c157dbdf82d5ab634d68c99f3098","name":"https://git.kernel.org/stable/c/11c58a0c1937c157dbdf82d5ab634d68c99f3098","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ba8ffb1251eb629c2ec35220e3896cf4f7b888a7","name":"https://git.kernel.org/stable/c/ba8ffb1251eb629c2ec35220e3896cf4f7b888a7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/67bb7521b6420d81dab7538c0686f18f7d6d09f4","name":"https://git.kernel.org/stable/c/67bb7521b6420d81dab7538c0686f18f7d6d09f4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156","name":"https://git.kernel.org/stable/c/4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83","name":"https://git.kernel.org/stable/c/a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-53474","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53474","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a0bc32b3cacf194dc479b342f006203fd1e1941a a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a0bc32b3cacf194dc479b342f006203fd1e1941a 11c58a0c1937c157dbdf82d5ab634d68c99f3098 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a0bc32b3cacf194dc479b342f006203fd1e1941a ba8ffb1251eb629c2ec35220e3896cf4f7b888a7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a0bc32b3cacf194dc479b342f006203fd1e1941a 9669fa17287c3af2bbd4868d4c8fdd9e57f8332e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a0bc32b3cacf194dc479b342f006203fd1e1941a 67bb7521b6420d81dab7538c0686f18f7d6d09f4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a0bc32b3cacf194dc479b342f006203fd1e1941a 4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.180 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.111 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.28 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2.15 6.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.3.2 6.3.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"53474","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kernel/cpu/mce/amd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83","status":"affected","version":"a0bc32b3cacf194dc479b342f006203fd1e1941a","versionType":"git"},{"lessThan":"11c58a0c1937c157dbdf82d5ab634d68c99f3098","status":"affected","version":"a0bc32b3cacf194dc479b342f006203fd1e1941a","versionType":"git"},{"lessThan":"ba8ffb1251eb629c2ec35220e3896cf4f7b888a7","status":"affected","version":"a0bc32b3cacf194dc479b342f006203fd1e1941a","versionType":"git"},{"lessThan":"9669fa17287c3af2bbd4868d4c8fdd9e57f8332e","status":"affected","version":"a0bc32b3cacf194dc479b342f006203fd1e1941a","versionType":"git"},{"lessThan":"67bb7521b6420d81dab7538c0686f18f7d6d09f4","status":"affected","version":"a0bc32b3cacf194dc479b342f006203fd1e1941a","versionType":"git"},{"lessThan":"4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156","status":"affected","version":"a0bc32b3cacf194dc479b342f006203fd1e1941a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kernel/cpu/mce/amd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.10"},{"lessThan":"5.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.180","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.111","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.28","versionType":"semver"},{"lessThanOrEqual":"6.2.*","status":"unaffected","version":"6.2.15","versionType":"semver"},{"lessThanOrEqual":"6.3.*","status":"unaffected","version":"6.3.2","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.180","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.111","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.28","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.2.15","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.3.2","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.4","versionStartIncluding":"5.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/MCE/AMD: Use an u64 for bank_map\n\nThee maximum number of MCA banks is 64 (MAX_NR_BANKS), see\n\n  a0bc32b3cacf (\"x86/mce: Increase maximum number of banks to 64\").\n\nHowever, the bank_map which contains a bitfield of which banks to\ninitialize is of type unsigned int and that overflows when those bit\nnumbers are >= 32, leading to UBSAN complaining correctly:\n\n  UBSAN: shift-out-of-bounds in arch/x86/kernel/cpu/mce/amd.c:1365:38\n  shift exponent 32 is too large for 32-bit type 'int'\n\nChange the bank_map to a u64 and use the proper BIT_ULL() macro when\nmodifying bits in there.\n\n  [ bp: Rewrite commit message. ]"}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:14:48.981Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83"},{"url":"https://git.kernel.org/stable/c/11c58a0c1937c157dbdf82d5ab634d68c99f3098"},{"url":"https://git.kernel.org/stable/c/ba8ffb1251eb629c2ec35220e3896cf4f7b888a7"},{"url":"https://git.kernel.org/stable/c/9669fa17287c3af2bbd4868d4c8fdd9e57f8332e"},{"url":"https://git.kernel.org/stable/c/67bb7521b6420d81dab7538c0686f18f7d6d09f4"},{"url":"https://git.kernel.org/stable/c/4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156"}],"title":"x86/MCE/AMD: Use an u64 for bank_map","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-53474","datePublished":"2025-10-01T11:42:43.798Z","dateReserved":"2025-10-01T11:39:39.401Z","dateUpdated":"2026-08-04T09:14:48.981Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-10-01 12:15:49","lastModifiedDate":"2026-08-04 10:19:07","problem_types":["CWE-190"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.180","matchCriteriaId":"096DA06C-349D-4644-941B-A5877497A9B4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.111","matchCriteriaId":"2B9DD776-7F17-4F72-B94F-54BFCBC692DD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.28","matchCriteriaId":"08F855F4-7188-4EE1-BD79-D4B6C7E2EF54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.2.15","matchCriteriaId":"3844A90B-940D-46C3-8D7B-9FF63F1AFC2F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.3.2","matchCriteriaId":"38F6F330-91A0-4675-8B90-6F950471A7CC"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"53474","Ordinal":"1","Title":"x86/MCE/AMD: Use an u64 for bank_map","CVE":"CVE-2023-53474","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"53474","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/MCE/AMD: Use an u64 for bank_map\n\nThee maximum number of MCA banks is 64 (MAX_NR_BANKS), see\n\n  a0bc32b3cacf (\"x86/mce: Increase maximum number of banks to 64\").\n\nHowever, the bank_map which contains a bitfield of which banks to\ninitialize is of type unsigned int and that overflows when those bit\nnumbers are >= 32, leading to UBSAN complaining correctly:\n\n  UBSAN: shift-out-of-bounds in arch/x86/kernel/cpu/mce/amd.c:1365:38\n  shift exponent 32 is too large for 32-bit type 'int'\n\nChange the bank_map to a u64 and use the proper BIT_ULL() macro when\nmodifying bits in there.\n\n  [ bp: Rewrite commit message. ]","Type":"Description","Title":"x86/MCE/AMD: Use an u64 for bank_map"}]}}}