{"id":"CVE-2026-89610","title":"kernel: ntfs: verify run length exceeding volume boundary (CVE-2026-89610)","summary":"A flaw was found in the Linux kernel's NTFS component. The mapping pairs decoder fails to verify if a run length extends beyond the volume boundary. A local attacker could exploit this by providing a malformed NTFS image with a crafted map…","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-787","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-15","sourceUpdated":"2026-09-15T10:31:46+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89610.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89610.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89610"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532418"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89610"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89610"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89610.mbox"},{"url":"https://git.kernel.org/stable/c/6e844d4b82434a781b80d02145fd1b17cf90e3c3"},{"url":"https://git.kernel.org/stable/c/fea9e4488f384c0ef1c0e3d96b565127c1b98447"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00553,"epssPercentile":0.45057,"scores":{"vendor":7,"cna":9.8},"ingestedAt":"2026-09-14T15:23:07.474Z","slug":"CVE-2026-89610","body":"## Overview\n\nA flaw was found in the Linux kernel's NTFS component. The mapping pairs decoder fails to verify if a run length extends beyond the volume boundary. A local attacker could exploit this by providing a malformed NTFS image with a crafted mapping pairs array. This could lead to memory corruption and potentially allow for privilege escalation.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89610.json)\n\n**kernel: ntfs: verify run length exceeding volume boundary** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-15.\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":203917,"id":"CVE-2026-89610","ts":1789490221531,"field":"cvss","old":"7","new":"5.5"},{"seq":203916,"id":"CVE-2026-89610","ts":1789490221531,"field":"severity","old":"high","new":"medium"},{"seq":203013,"id":"CVE-2026-89610","ts":1789403733348,"field":"cvss","old":"9.8","new":"7"},{"seq":203012,"id":"CVE-2026-89610","ts":1789403733348,"field":"severity","old":"critical","new":"high"},{"seq":197863,"id":"CVE-2026-89610","ts":1789384320719,"field":"cvss","old":"7","new":"9.8"},{"seq":197862,"id":"CVE-2026-89610","ts":1789384320719,"field":"severity","old":"high","new":"critical"},{"seq":183733,"id":"CVE-2026-89610","ts":1789356677149,"field":"cvss","old":"9.8","new":"7"},{"seq":183732,"id":"CVE-2026-89610","ts":1789356677149,"field":"severity","old":"critical","new":"high"},{"seq":153438,"id":"CVE-2026-89610","ts":1789285350513,"field":"cvss","old":null,"new":"9.8"},{"seq":153437,"id":"CVE-2026-89610","ts":1789285350513,"field":"severity","old":"none","new":"critical"},{"seq":147253,"id":"CVE-2026-89610","ts":1789270204643,"field":"cvss","old":null,"new":"7"},{"seq":147252,"id":"CVE-2026-89610","ts":1789270204643,"field":"severity","old":"none","new":"high"},{"seq":109006,"id":"CVE-2026-89610","ts":1789183729924,"field":"cvss","old":null,"new":"7"},{"seq":109005,"id":"CVE-2026-89610","ts":1789183729924,"field":"severity","old":"none","new":"high"}]}