{"cve":"CVE-2026-72185","nvd":{"published":"2026-08-15T06:21:36.870","modified":"2026-08-17T06:18:19.080","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix WARN_ON for resident attribute in ntfs_map_runlist_nolock()\n\nWhen ntfs_map_runlist_nolock() needs to look up the attribute extent\ncontaining a target VCN (ctx_needs_reset == true), it calls\nntfs_attr_lookup() and then expects the result to be a non-resident\nattribute, since only non-resident attributes have a mapping pairs\narray to decompress.\n\nA crafted NTFS image can place a resident attribute where a non-resident\none is expected, causing ntfs_attr_lookup() to succeed but return a\nresident attribute record.  Previously this was caught only by a\nWARN_ON(), which does not stop execution.  The code then falls through to\nread a->data.non_resident.highest_vcn from what is actually a resident\nattribute, accessing the wrong union member and corrupting the VCN range\ncheck.\n\nThe caller path triggering this warning during mount is:\n\n  ntfs_map_runlist_nolock\n  ntfs_empty_logfile\n  load_system_files\n  ntfs_fill_super\n\nIn this path ctx is NULL, so ntfs_map_runlist_nolock() allocates a\ntemporary search context internally and sets ctx_needs_reset = true.\nThe existing resident-attribute guard in the ctx != NULL branch already\nreturns -EIO silently for the same condition; make the ctx_needs_reset\npath consistent by replacing the WARN_ON() with the same -EIO error\nreturn.\n\nThis causes the crafted image to be rejected with a mount error instead\nof triggering a kernel warning.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":[],"references":["https://git.kernel.org/stable/c/b397b1238a217264bb02f963a1a1eadf71906375","https://git.kernel.org/stable/c/b8d6c528e9d57d263fee1a648409f84a68b2561d"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-72185","score":0.00671,"percentile":0.52044,"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."]}