{"id":"CVE-2026-89615","title":"kernel: fs/ntfs3: bound page_lcns[] index by the log record (CVE-2026-89615)","summary":"A flaw was found in the Linux kernel's NTFS3 file system driver. A local attacker could exploit this by providing a specially crafted log record. This crafted record causes a buffer overflow in the page_lcns[] array, leading to memory corr…","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":"Linux","affected":["Linux >= b46acd6a6a627d876898e1c84d3f84902264b445 < 31fdd11f75da9823500168cecb07aa45130915a3","Linux >= b46acd6a6a627d876898e1c84d3f84902264b445 < bb742d1030864c0fe140666f639428ba4e90b2ca","Linux >= b46acd6a6a627d876898e1c84d3f84902264b445 < 61ca8cbbf68f77f25b699ed4358bd232f94ed43b","Linux >= b46acd6a6a627d876898e1c84d3f84902264b445 < f4c1bc6d7331f344ffcea93c2a37badcbe15baa6","Linux >= b46acd6a6a627d876898e1c84d3f84902264b445 < 7ccb94901f38a062034b56b43c774050b113758f","Linux >= b46acd6a6a627d876898e1c84d3f84902264b445 < 1135ebc225996b3ac1a295652b19a0a706737a6c","Linux >= b46acd6a6a627d876898e1c84d3f84902264b445 < 6f7b9dbdc1b7520206abce0049bdd143eb536e75","Linux 5.15"],"published":"2026-09-11","updated":"2026-09-18","sourceUpdated":"2026-09-18T22:34:42+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89615.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89615.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89615"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532402"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89615"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89615"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89615.mbox"},{"url":"https://git.kernel.org/stable/c/31fdd11f75da9823500168cecb07aa45130915a3"},{"url":"https://git.kernel.org/stable/c/bb742d1030864c0fe140666f639428ba4e90b2ca"},{"url":"https://git.kernel.org/stable/c/61ca8cbbf68f77f25b699ed4358bd232f94ed43b"},{"url":"https://git.kernel.org/stable/c/f4c1bc6d7331f344ffcea93c2a37badcbe15baa6"},{"url":"https://git.kernel.org/stable/c/7ccb94901f38a062034b56b43c774050b113758f"},{"url":"https://git.kernel.org/stable/c/1135ebc225996b3ac1a295652b19a0a706737a6c"},{"url":"https://git.kernel.org/stable/c/6f7b9dbdc1b7520206abce0049bdd143eb536e75"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00154,"epssPercentile":0.04922,"scores":{"vendor":5.5,"cna":8.4},"ingestedAt":"2026-09-14T15:23:07.450Z","slug":"CVE-2026-89615","body":"## Overview\n\nA flaw was found in the Linux kernel's NTFS3 file system driver. A local attacker could exploit this by providing a specially crafted log record. This crafted record causes a buffer overflow in the page_lcns[] array, leading to memory corruption within an otherwise valid entry.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89615.json)\n\n**kernel: fs/ntfs3: bound page_lcns[] index by the log record** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.\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,"exploitation":0,"ransomware":0},"changes":[{"seq":208085,"id":"CVE-2026-89615","ts":1789922706682,"field":"cvss","old":"8.4","new":"5.5"},{"seq":208084,"id":"CVE-2026-89615","ts":1789922706682,"field":"severity","old":"high","new":"medium"},{"seq":197849,"id":"CVE-2026-89615","ts":1789384320666,"field":"cvss","old":"6.7","new":"8.4"},{"seq":197848,"id":"CVE-2026-89615","ts":1789384320666,"field":"severity","old":"medium","new":"high"},{"seq":183416,"id":"CVE-2026-89615","ts":1789356675277,"field":"cvss","old":"8.4","new":"6.7"},{"seq":183415,"id":"CVE-2026-89615","ts":1789356675277,"field":"severity","old":"high","new":"medium"},{"seq":153448,"id":"CVE-2026-89615","ts":1789285350552,"field":"cvss","old":null,"new":"8.4"},{"seq":153447,"id":"CVE-2026-89615","ts":1789285350552,"field":"severity","old":"none","new":"high"},{"seq":147261,"id":"CVE-2026-89615","ts":1789270205232,"field":"cvss","old":null,"new":"6.7"},{"seq":147260,"id":"CVE-2026-89615","ts":1789270205232,"field":"severity","old":"none","new":"medium"},{"seq":109016,"id":"CVE-2026-89615","ts":1789183729962,"field":"cvss","old":null,"new":"6.7"},{"seq":109015,"id":"CVE-2026-89615","ts":1789183729962,"field":"severity","old":"none","new":"medium"}]}