{"api_version":"1","generated_at":"2026-09-25T08:35:15+00:00","cve":"CVE-2026-97441","urls":{"html":"https://cve.report/CVE-2026-97441","api":"https://cve.report/api/cve/CVE-2026-97441.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-97441","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-97441"},"summary":{"title":"ata: ahci: fail probe if BAR too small for claimed ports","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nata: ahci: fail probe if BAR too small for claimed ports\n\nWhen an AHCI controller is disabled in BIOS, its HOST_CAP register may\ncontain a bogus value, e.g. 0xFFFFFFFF.\n\nSince CAP.NP (Number of Ports) is a zeroes based 5-bit register field,\na value of 0x1f means 32 ports. If CAP.NP claims more ports than can\nphysically fit within the mapped BAR region, accessing port registers\nbeyond the BAR boundary causes a kernel panic.\n\nAdd validation in ahci_init_one() to check that the BAR size is\nsufficient for the number of ports claimed in CAP.NP. The check\ncalculates the required MMIO size as:\n\n  required_size = 0x100 (global registers) + max_ports * 0x80\n\nIf required_size exceeds the actual BAR size, the probe fails with\n-ENODEV, preventing the panic and providing a clear error message.\n\n[cassel: commit log]","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-24 17:17:22","updated_at":"2026-09-24 17:17:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c4086c6e1af757e1ff26fa2d2926b3ec0195de79","name":"https://git.kernel.org/stable/c/c4086c6e1af757e1ff26fa2d2926b3ec0195de79","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/df262c828b616450eb351349e91c63447551bd01","name":"https://git.kernel.org/stable/c/df262c828b616450eb351349e91c63447551bd01","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f2e291043c37a896d7f9797e25a356dceb030177","name":"https://git.kernel.org/stable/c/f2e291043c37a896d7f9797e25a356dceb030177","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97441","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97441","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 df262c828b616450eb351349e91c63447551bd01 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 f2e291043c37a896d7f9797e25a356dceb030177 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 c4086c6e1af757e1ff26fa2d2926b3ec0195de79 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.111 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.53 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/ata/ahci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"df262c828b616450eb351349e91c63447551bd01","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"f2e291043c37a896d7f9797e25a356dceb030177","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"c4086c6e1af757e1ff26fa2d2926b3ec0195de79","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"6.12.111","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.18.53","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/ata/ahci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nata: ahci: fail probe if BAR too small for claimed ports\n\nWhen an AHCI controller is disabled in BIOS, its HOST_CAP register may\ncontain a bogus value, e.g. 0xFFFFFFFF.\n\nSince CAP.NP (Number of Ports) is a zeroes based 5-bit register field,\na value of 0x1f means 32 ports. If CAP.NP claims more ports than can\nphysically fit within the mapped BAR region, accessing port registers\nbeyond the BAR boundary causes a kernel panic.\n\nAdd validation in ahci_init_one() to check that the BAR size is\nsufficient for the number of ports claimed in CAP.NP. The check\ncalculates the required MMIO size as:\n\n  required_size = 0x100 (global registers) + max_ports * 0x80\n\nIf required_size exceeds the actual BAR size, the probe fails with\n-ENODEV, preventing the panic and providing a clear error message.\n\n[cassel: commit log]"}],"providerMetadata":{"dateUpdated":"2026-09-24T16:03:54.845Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/df262c828b616450eb351349e91c63447551bd01"},{"url":"https://git.kernel.org/stable/c/f2e291043c37a896d7f9797e25a356dceb030177"},{"url":"https://git.kernel.org/stable/c/c4086c6e1af757e1ff26fa2d2926b3ec0195de79"}],"title":"ata: ahci: fail probe if BAR too small for claimed ports","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-97441","datePublished":"2026-09-24T16:03:54.845Z","dateReserved":"2026-09-24T14:53:16.870Z","dateUpdated":"2026-09-24T16:03:54.845Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-24 17:17:22","lastModifiedDate":"2026-09-24 17:17:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"97441","Ordinal":"1","Title":"ata: ahci: fail probe if BAR too small for claimed ports","CVE":"CVE-2026-97441","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"97441","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nata: ahci: fail probe if BAR too small for claimed ports\n\nWhen an AHCI controller is disabled in BIOS, its HOST_CAP register may\ncontain a bogus value, e.g. 0xFFFFFFFF.\n\nSince CAP.NP (Number of Ports) is a zeroes based 5-bit register field,\na value of 0x1f means 32 ports. If CAP.NP claims more ports than can\nphysically fit within the mapped BAR region, accessing port registers\nbeyond the BAR boundary causes a kernel panic.\n\nAdd validation in ahci_init_one() to check that the BAR size is\nsufficient for the number of ports claimed in CAP.NP. The check\ncalculates the required MMIO size as:\n\n  required_size = 0x100 (global registers) + max_ports * 0x80\n\nIf required_size exceeds the actual BAR size, the probe fails with\n-ENODEV, preventing the panic and providing a clear error message.\n\n[cassel: commit log]","Type":"Description","Title":"ata: ahci: fail probe if BAR too small for claimed ports"}]}}}