{"cve":"CVE-2026-45935","nvd":{"published":"2026-05-27T14:17:09.613","modified":"2026-06-24T17:10:55.583","status":"Undergoing Analysis","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/36c03f7f177b34d51f1cf1d2304b1074607bf4b0","https://git.kernel.org/stable/c/78942172d5bff4d4afed8674abc09cc560ce44a0","https://git.kernel.org/stable/c/a584b9d1059b29e97e17c919274e9adfb846f2a0","https://git.kernel.org/stable/c/b271c9cb85927210b1b799e55ee7f702d12b4336","https://git.kernel.org/stable/c/b2bc7c44ed1779fc9eaab9a186db0f0d01439622"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-45935","score":0.00149,"percentile":0.04101,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}