{"id":"CVE-2026-89614","title":"kernel: ntfs: bound the free-cluster bitmap scan to the volume (CVE-2026-89614)","summary":"A flaw was found in the Linux kernel's NTFS file system driver. This vulnerability occurs because the free-cluster bitmap scan is not properly bounded to the volume size. A specially crafted NTFS image, where the bitmap covers more cluster…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-125","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T10:28:48+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89614.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89614.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89614"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532318"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89614"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89614"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89614.mbox"},{"url":"https://git.kernel.org/stable/c/19cac7902a8ab748e15f98ddaafcf5f8882be21d"},{"url":"https://git.kernel.org/stable/c/dc15a9f5307d5372aef3b64bf3ed7802f530c471"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00407,"epssPercentile":0.34634,"scores":{"vendor":4.7,"cna":9.8},"ingestedAt":"2026-09-14T15:23:07.474Z","slug":"CVE-2026-89614","body":"## Overview\n\nA flaw was found in the Linux kernel's NTFS file system driver. This vulnerability occurs because the free-cluster bitmap scan is not properly bounded to the volume size. A specially crafted NTFS image, where the bitmap covers more clusters than the volume actually has, can lead to an out-of-bounds read when a file on such a volume is extended. This could result in system instability or the disclosure of sensitive information.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89614.json)\n\n**kernel: ntfs: bound the free-cluster bitmap scan to the volume** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":205467,"id":"CVE-2026-89614","ts":1789576721328,"field":"cvss","old":"4.7","new":"5.5"},{"seq":202855,"id":"CVE-2026-89614","ts":1789403732684,"field":"cvss","old":"9.8","new":"4.7"},{"seq":202854,"id":"CVE-2026-89614","ts":1789403732684,"field":"severity","old":"critical","new":"medium"},{"seq":197851,"id":"CVE-2026-89614","ts":1789384320673,"field":"cvss","old":"4.7","new":"9.8"},{"seq":197850,"id":"CVE-2026-89614","ts":1789384320673,"field":"severity","old":"medium","new":"critical"},{"seq":183414,"id":"CVE-2026-89614","ts":1789356675269,"field":"cvss","old":"9.8","new":"4.7"},{"seq":183413,"id":"CVE-2026-89614","ts":1789356675269,"field":"severity","old":"critical","new":"medium"},{"seq":153446,"id":"CVE-2026-89614","ts":1789285350545,"field":"cvss","old":null,"new":"9.8"},{"seq":153445,"id":"CVE-2026-89614","ts":1789285350545,"field":"severity","old":"none","new":"critical"},{"seq":147381,"id":"CVE-2026-89614","ts":1789270210680,"field":"cvss","old":null,"new":"4.7"},{"seq":147380,"id":"CVE-2026-89614","ts":1789270210680,"field":"severity","old":"none","new":"medium"},{"seq":109143,"id":"CVE-2026-89614","ts":1789183730478,"field":"cvss","old":null,"new":"4.7"},{"seq":109142,"id":"CVE-2026-89614","ts":1789183730478,"field":"severity","old":"none","new":"medium"}]}