{"api_version":"1","generated_at":"2026-06-02T03:16:02+00:00","cve":"CVE-2026-45935","urls":{"html":"https://cve.report/CVE-2026-45935","api":"https://cve.report/api/cve/CVE-2026-45935.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45935","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45935"},"summary":{"title":"fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot\n\nIn the 'DeleteIndexEntryRoot' case of the 'do_action' function, the\nentry size ('esize') is retrieved from the log record without adequate\nbounds checking.\n\nSpecifically, the code calculates the end of the entry ('e2') using:\n    e2 = Add2Ptr(e1, esize);\n\nIt then calculates the size for memmove using 'PtrOffset(e2, ...)',\nwhich subtracts the end pointer from the buffer limit. If 'esize' is\nmaliciously large, 'e2' exceeds the used buffer size. This results in\na negative offset which, when cast to size_t for memmove, interprets\nas a massive unsigned integer, leading to a heap buffer overflow.\n\nThis commit adds a check to ensure that the entry size ('esize') strictly\nfits within the remaining used space of the index header before performing\nmemory operations.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:09","updated_at":"2026-05-30 11:17:16"},"problem_types":[],"metrics":[{"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:N/UI:R/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","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:N/UI:R/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/36c03f7f177b34d51f1cf1d2304b1074607bf4b0","name":"https://git.kernel.org/stable/c/36c03f7f177b34d51f1cf1d2304b1074607bf4b0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f3b437a4c3e022a1449658ae9f3dd34859894513","name":"https://git.kernel.org/stable/c/f3b437a4c3e022a1449658ae9f3dd34859894513","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/78942172d5bff4d4afed8674abc09cc560ce44a0","name":"https://git.kernel.org/stable/c/78942172d5bff4d4afed8674abc09cc560ce44a0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b2bc7c44ed1779fc9eaab9a186db0f0d01439622","name":"https://git.kernel.org/stable/c/b2bc7c44ed1779fc9eaab9a186db0f0d01439622","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a584b9d1059b29e97e17c919274e9adfb846f2a0","name":"https://git.kernel.org/stable/c/a584b9d1059b29e97e17c919274e9adfb846f2a0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c065541b71b79874c83d418a9acd18ad5826339b","name":"https://git.kernel.org/stable/c/c065541b71b79874c83d418a9acd18ad5826339b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b271c9cb85927210b1b799e55ee7f702d12b4336","name":"https://git.kernel.org/stable/c/b271c9cb85927210b1b799e55ee7f702d12b4336","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45935","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45935","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 36c03f7f177b34d51f1cf1d2304b1074607bf4b0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 b271c9cb85927210b1b799e55ee7f702d12b4336 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 a584b9d1059b29e97e17c919274e9adfb846f2a0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 c065541b71b79874c83d418a9acd18ad5826339b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot\n\nIn the 'DeleteIndexEntryRoot' case of the 'do_action' function, the\nentry size ('esize') is retrieved from the log record without adequate\nbounds checking.\n\nSpecifically, the code calculates the end of the entry ('e2') using:\n    e2 = Add2Ptr(e1, esize);\n\nIt then calculates the size for memmove using 'PtrOffset(e2, ...)',\nwhich subtracts the end pointer from the buffer limit. If 'esize' is\nmaliciously large, 'e2' exceeds the used buffer size. This results in\na negative offset which, when cast to size_t for memmove, interprets\nas a massive unsigned integer, leading to a heap buffer overflow.\n\nThis commit adds a check to ensure that the entry size ('esize') strictly\nfits within the remaining used space of the index header before performing\nmemory operations."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-30T10:46:04.505Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/36c03f7f177b34d51f1cf1d2304b1074607bf4b0"},{"url":"https://git.kernel.org/stable/c/b271c9cb85927210b1b799e55ee7f702d12b4336"},{"url":"https://git.kernel.org/stable/c/a584b9d1059b29e97e17c919274e9adfb846f2a0"},{"url":"https://git.kernel.org/stable/c/c065541b71b79874c83d418a9acd18ad5826339b"},{"url":"https://git.kernel.org/stable/c/78942172d5bff4d4afed8674abc09cc560ce44a0"},{"url":"https://git.kernel.org/stable/c/f3b437a4c3e022a1449658ae9f3dd34859894513"},{"url":"https://git.kernel.org/stable/c/b2bc7c44ed1779fc9eaab9a186db0f0d01439622"}],"title":"fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-45935","datePublished":"2026-05-27T12:17:52.705Z","dateReserved":"2026-05-13T15:03:33.086Z","dateUpdated":"2026-05-30T10:46:04.505Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:09","lastModifiedDate":"2026-05-30 11:17:16","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45935","Ordinal":"1","Title":"fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot","CVE":"CVE-2026-45935","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45935","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot\n\nIn the 'DeleteIndexEntryRoot' case of the 'do_action' function, the\nentry size ('esize') is retrieved from the log record without adequate\nbounds checking.\n\nSpecifically, the code calculates the end of the entry ('e2') using:\n    e2 = Add2Ptr(e1, esize);\n\nIt then calculates the size for memmove using 'PtrOffset(e2, ...)',\nwhich subtracts the end pointer from the buffer limit. If 'esize' is\nmaliciously large, 'e2' exceeds the used buffer size. This results in\na negative offset which, when cast to size_t for memmove, interprets\nas a massive unsigned integer, leading to a heap buffer overflow.\n\nThis commit adds a check to ensure that the entry size ('esize') strictly\nfits within the remaining used space of the index header before performing\nmemory operations.","Type":"Description","Title":"fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot"}]}}}