{"id":"CVE-2026-98451","title":"kernel: smb: client: use finish_no_open() for non-regular inodes (CVE-2026-98451)","summary":"A flaw was found in the Linux kernel's SMB client. A local user can trigger this issue by opening an existing symbolic link or non-regular file on an SMB mount using file creation flags. Because the client improperly handles non-regular fi…","severity":"low","cvss":3.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","cvssSource":"vendor","cwe":"CWE-772","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-10-18","updated":"2026-10-24","sourceUpdated":"2026-10-24T14:23:45+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98451.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98451.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98451"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554898"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98451"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98451"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98451.mbox"},{"url":"https://git.kernel.org/stable/c/045532f920d86dd76600b635f9756e5fd671ddfc"},{"url":"https://git.kernel.org/stable/c/ed03d547598c92a036f20e89156540995cac889a"},{"url":"https://git.kernel.org/stable/c/70a7918fda54a06d836acc91eb9a3c7e860fe0a0"},{"url":"https://git.kernel.org/stable/c/3c07deb26273155c180aedfd9041ab58015d2521"},{"url":"https://git.kernel.org/stable/c/e66cf1625ec4a3fe68346119f371def713fd0a4d"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00354,"epssPercentile":0.2891,"scores":{"vendor":3.3,"cna":8.8},"ingestedAt":"2026-10-18T15:45:12.305Z","slug":"CVE-2026-98451","body":"## Overview\n\nA flaw was found in the Linux kernel's SMB client. A local user can trigger this issue by opening an existing symbolic link or non-regular file on an SMB mount using file creation flags. Because the client improperly handles non-regular files during open operations, it fails to release directory entry references. This flaw leads to a resource leak, which can result in a denial of service (DoS) through resource exhaustion.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98451.json)\n\n**kernel: smb: client: use finish_no_open() for non-regular inodes** — rated Low by Red Hat. Released 2026-10-18, updated 2026-10-24.\n\nAffected:\n\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\nNo fix planned:\n\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 6\n- Red Hat Enterprise Linux 7\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":18,"depthScoreParts":{"impact":18.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":229519,"id":"CVE-2026-98451","ts":1793019832554,"field":"cvss","old":"8.8","new":"3.3"},{"seq":229518,"id":"CVE-2026-98451","ts":1793019832554,"field":"severity","old":"high","new":"low"},{"seq":228976,"id":"CVE-2026-98451","ts":1792854126714,"field":"cvss","old":null,"new":"8.8"},{"seq":228975,"id":"CVE-2026-98451","ts":1792854126714,"field":"severity","old":"none","new":"high"}]}