{"id":"CVE-2026-89705","title":"kernel: nfsd: restore rq_status_counter to even on all nfsd_dispatch() exit paths (CVE-2026-89705)","summary":"A flaw was found in the Linux kernel's Network File System (NFS) daemon, nfsd. This vulnerability occurs due to a synchronization issue where a status counter (rq_status_counter) is not correctly reset on all exit paths within the nfsd_dis…","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-125","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T10:08:29+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89705.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89705.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89705"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532490"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89705"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89705"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89705.mbox"},{"url":"https://git.kernel.org/stable/c/b08c30f08d57f30699d36809d92f0b683dca261f"},{"url":"https://git.kernel.org/stable/c/f6045886fe3f14f269f683d64021b004a50d0efa"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.0015,"epssPercentile":0.04526,"scores":{"vendor":7,"cna":7.1},"ingestedAt":"2026-09-14T15:23:07.472Z","slug":"CVE-2026-89705","body":"## Overview\n\nA flaw was found in the Linux kernel's Network File System (NFS) daemon, nfsd. This vulnerability occurs due to a synchronization issue where a status counter (rq_status_counter) is not correctly reset on all exit paths within the nfsd_dispatch() function. This can lead to a race condition where a lockless reader accesses actively changing data, potentially reading beyond the intended memory boundary. An attacker could exploit this memory corruption to cause a denial of service or potentially disclose sensitive information.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89705.json)\n\n**kernel: nfsd: restore rq_status_counter to even on all nfsd_dispatch() exit paths** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\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 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nAffected","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":203882,"id":"CVE-2026-89705","ts":1789490210655,"field":"cvss","old":"5.9","new":"7"},{"seq":203881,"id":"CVE-2026-89705","ts":1789490210655,"field":"severity","old":"medium","new":"high"},{"seq":202824,"id":"CVE-2026-89705","ts":1789403732555,"field":"cvss","old":"7.1","new":"5.9"},{"seq":202823,"id":"CVE-2026-89705","ts":1789403732555,"field":"severity","old":"high","new":"medium"},{"seq":197712,"id":"CVE-2026-89705","ts":1789384318510,"field":"cvss","old":"5.9","new":"7.1"},{"seq":197711,"id":"CVE-2026-89705","ts":1789384318510,"field":"severity","old":"medium","new":"high"},{"seq":183353,"id":"CVE-2026-89705","ts":1789356675010,"field":"cvss","old":"7.1","new":"5.9"},{"seq":183352,"id":"CVE-2026-89705","ts":1789356675010,"field":"severity","old":"high","new":"medium"},{"seq":153590,"id":"CVE-2026-89705","ts":1789285351404,"field":"cvss","old":null,"new":"7.1"},{"seq":153589,"id":"CVE-2026-89705","ts":1789285351404,"field":"severity","old":"none","new":"high"},{"seq":147121,"id":"CVE-2026-89705","ts":1789270195257,"field":"cvss","old":null,"new":"5.9"},{"seq":147120,"id":"CVE-2026-89705","ts":1789270195257,"field":"severity","old":"none","new":"medium"},{"seq":108878,"id":"CVE-2026-89705","ts":1789183729371,"field":"cvss","old":null,"new":"5.9"},{"seq":108877,"id":"CVE-2026-89705","ts":1789183729371,"field":"severity","old":"none","new":"medium"}]}