{"id":"CVE-2026-89680","title":"kernel: nfsd: fix nfsd_file leak on inter-server COPY setup failure (CVE-2026-89680)","summary":"A flaw was found in the Linux kernel's nfsd component. This vulnerability occurs when an inter-server COPY operation fails during its setup phase, leading to improper resource cleanup. Consequently, each failed operation results in a memor…","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-911","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-21","sourceUpdated":"2026-09-21T09:50:20+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89680.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89680.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89680"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532302"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89680"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89680"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89680.mbox"},{"url":"https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab"},{"url":"https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078"},{"url":"https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd"},{"url":"https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00641,"epssPercentile":0.49003,"scores":{"vendor":5.3,"cna":7.5},"ingestedAt":"2026-09-14T15:23:07.473Z","slug":"CVE-2026-89680","body":"## Overview\n\nA flaw was found in the Linux kernel's nfsd component. This vulnerability occurs when an inter-server COPY operation fails during its setup phase, leading to improper resource cleanup. Consequently, each failed operation results in a memory leak, consuming system resources. A remote attacker could repeatedly trigger these failures, potentially leading to resource exhaustion and a Denial of Service (DoS) on the affected system.\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 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89680.json)\n\n**kernel: nfsd: fix nfsd_file leak on inter-server COPY setup failure** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-21.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\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 9\n- Red Hat OpenShift Container Platform 4\n\nNot affected:\n\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nOut of support scope","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":208496,"id":"CVE-2026-89680","ts":1790005720735,"field":"cvss","old":"5.3","new":"7"},{"seq":208495,"id":"CVE-2026-89680","ts":1790005720735,"field":"severity","old":"medium","new":"high"},{"seq":202830,"id":"CVE-2026-89680","ts":1789403732580,"field":"cvss","old":"7.5","new":"5.3"},{"seq":202829,"id":"CVE-2026-89680","ts":1789403732580,"field":"severity","old":"high","new":"medium"},{"seq":197750,"id":"CVE-2026-89680","ts":1789384318692,"field":"cvss","old":"5.3","new":"7.5"},{"seq":197749,"id":"CVE-2026-89680","ts":1789384318692,"field":"severity","old":"medium","new":"high"},{"seq":183363,"id":"CVE-2026-89680","ts":1789356675052,"field":"cvss","old":"7.5","new":"5.3"},{"seq":183362,"id":"CVE-2026-89680","ts":1789356675052,"field":"severity","old":"high","new":"medium"},{"seq":153552,"id":"CVE-2026-89680","ts":1789285351253,"field":"cvss","old":null,"new":"7.5"},{"seq":153551,"id":"CVE-2026-89680","ts":1789285351253,"field":"severity","old":"none","new":"high"},{"seq":147396,"id":"CVE-2026-89680","ts":1789270210745,"field":"cvss","old":null,"new":"5.3"},{"seq":147395,"id":"CVE-2026-89680","ts":1789270210745,"field":"severity","old":"none","new":"medium"},{"seq":109160,"id":"CVE-2026-89680","ts":1789183730547,"field":"cvss","old":null,"new":"5.3"},{"seq":109159,"id":"CVE-2026-89680","ts":1789183730547,"field":"severity","old":"none","new":"medium"}]}