{"id":"CVE-2026-98512","title":"kernel: drm/nouveau: RCU-free the scheduler-containing nouveau_sched (CVE-2026-98512)","summary":"A flaw was found in the Linux kernel's Nouveau graphics driver. When destroying a GPU scheduler object, the driver frees memory prematurely while user-space synchronization objects still hold references to it. A local, unprivileged user co…","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-825","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-10-18","updated":"2026-10-24","sourceUpdated":"2026-10-24T14:27:56+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98512.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98512.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98512"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554846"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98512"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98512"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98512.mbox"},{"url":"https://git.kernel.org/stable/c/40edf5eefc3fd94592a91d6eb074d4fc6f606c75"},{"url":"https://git.kernel.org/stable/c/35151e9a8274174ccbb92e3b3ba7dc7a008dcada"},{"url":"https://git.kernel.org/stable/c/cd6e11b6ebe04a0a1f1435df561acada9eadc563"},{"url":"https://git.kernel.org/stable/c/f7eae6d8d768fabd6b59779ca7da79e02c74e113"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00159,"epssPercentile":0.05033,"scores":{"vendor":5.5,"cna":7.1},"ingestedAt":"2026-10-18T15:45:12.286Z","slug":"CVE-2026-98512","body":"## Overview\n\nA flaw was found in the Linux kernel's Nouveau graphics driver. When destroying a GPU scheduler object, the driver frees memory prematurely while user-space synchronization objects still hold references to it. A local, unprivileged user could exploit this flaw by querying synchronization file information to trigger a use-after-free read, potentially leading to a system crash and Denial of Service (DoS) or information disclosure.\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 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98512.json)\n\n**kernel: drm/nouveau: RCU-free the scheduler-containing nouveau_sched** — rated Moderate 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 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 Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229500,"id":"CVE-2026-98512","ts":1793019822630,"field":"cvss","old":"7.1","new":"5.5"},{"seq":229499,"id":"CVE-2026-98512","ts":1793019822630,"field":"severity","old":"high","new":"medium"},{"seq":228940,"id":"CVE-2026-98512","ts":1792854116148,"field":"cvss","old":null,"new":"7.1"},{"seq":228939,"id":"CVE-2026-98512","ts":1792854116148,"field":"severity","old":"none","new":"high"}]}