{"id":"CVE-2026-89710","title":"kernel: NFSv4.1: fix layout segment leak on the pnfs_layout_process() forget path (CVE-2026-89710)","summary":"A flaw was found in the Linux kernel's NFSv4.1 implementation. When a server returns a new layout state identifier while an existing one is still active, the pnfs_layout_process() function fails to properly release memory associated with l…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-772","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-15","sourceUpdated":"2026-09-15T19:43:50+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89710.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89710.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89710"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532139"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89710"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89710"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89710.mbox"},{"url":"https://git.kernel.org/stable/c/32ac1b0b7f1cfa0d1a1faf9c72f4154046101070"},{"url":"https://git.kernel.org/stable/c/36e3f13bf0728f4ce11ee8904cec82a783222f62"},{"url":"https://git.kernel.org/stable/c/7c5b0e813efd9124760d5fd1bfc6b229f03fb1a2"},{"url":"https://git.kernel.org/stable/c/ee5a386cfe60f3f8286de16a9db8e1a08f0bc124"},{"url":"https://git.kernel.org/stable/c/f52188118d319b47d49ee91a897f6afda4879c59"},{"url":"https://git.kernel.org/stable/c/ad3e41855325e55623276660ef20fbc3b8ba087f"},{"url":"https://git.kernel.org/stable/c/a080bb69d30f11738d753a60d1eb733d627c2093"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00172,"epssPercentile":0.06963,"ingestedAt":"2026-09-14T15:23:07.449Z","slug":"CVE-2026-89710","body":"## Overview\n\nA flaw was found in the Linux kernel's NFSv4.1 implementation. When a server returns a new layout state identifier while an existing one is still active, the pnfs_layout_process() function fails to properly release memory associated with layout segments. This oversight leads to a memory leak, which could eventually result in a Denial of Service (DoS) condition for affected systems.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89710.json)\n\n**kernel: NFSv4.1: fix layout segment leak on the pnfs_layout_process() forget path** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-15.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNot affected:\n\n- Red Hat Enterprise Linux 7\n\n## Remediation\n\nOut of support scope","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":205530,"id":"CVE-2026-89710","ts":1789576723547,"field":"cvss","old":"5.3","new":"7"},{"seq":205529,"id":"CVE-2026-89710","ts":1789576723547,"field":"severity","old":"medium","new":"high"},{"seq":204091,"id":"CVE-2026-89710","ts":1789490231398,"field":"cvss","old":null,"new":"5.3"},{"seq":204090,"id":"CVE-2026-89710","ts":1789490231398,"field":"severity","old":"none","new":"medium"},{"seq":147688,"id":"CVE-2026-89710","ts":1789270211889,"field":"cvss","old":null,"new":"5.3"},{"seq":147687,"id":"CVE-2026-89710","ts":1789270211889,"field":"severity","old":"none","new":"medium"},{"seq":109442,"id":"CVE-2026-89710","ts":1789183731930,"field":"cvss","old":null,"new":"5.3"},{"seq":109441,"id":"CVE-2026-89710","ts":1789183731930,"field":"severity","old":"none","new":"medium"}]}