{"id":"CVE-2026-98515","title":"kernel: drm/nouveau: fix double-free in nvif_vmm_dtor (CVE-2026-98515)","summary":"A flaw was found in the Linux kernel's Nouveau graphics driver. This vulnerability allows a local attacker to cause a Denial of Service (DoS) by crashing the system or potentially escalate privileges. During device initialization failures,…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-1341","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":"2026-10-18","updated":"2026-10-24","sourceUpdated":"2026-10-24T14:23:28+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98515.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98515.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98515"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554836"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98515"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98515"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98515.mbox"},{"url":"https://git.kernel.org/stable/c/023e7a01f8fb27799f0987b5bcda325d73a2904c"},{"url":"https://git.kernel.org/stable/c/375901ac0f286e81be00a4126e57d488cb401884"},{"url":"https://git.kernel.org/stable/c/bf542ecd4f60d4689818d194e7ca74772fe0f8b5"},{"url":"https://git.kernel.org/stable/c/f09f4a536935b15539f2de9fe775a2641202be90"},{"url":"https://git.kernel.org/stable/c/279e5ac137370e274a09dd552547ae6bddd0d4d5"},{"url":"https://git.kernel.org/stable/c/109a8d2d5b7d2719ebe09df3f9241023900b3846"},{"url":"https://git.kernel.org/stable/c/872a5473c02a26c955be44d52b7ab2f8ea70a2cf"},{"url":"https://git.kernel.org/stable/c/97077ac87afe9e91ec074ef0be64454e7ccbf344"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00169,"epssPercentile":0.06262,"scores":{"vendor":4.7,"cna":7.8},"ingestedAt":"2026-10-18T15:45:12.284Z","slug":"CVE-2026-98515","body":"## Overview\n\nA flaw was found in the Linux kernel's Nouveau graphics driver. This vulnerability allows a local attacker to cause a Denial of Service (DoS) by crashing the system or potentially escalate privileges. During device initialization failures, the driver's error-handling path executes redundant cleanup routines that release already-freed memory. This improper resource cleanup causes a double-free condition, leading to kernel memory corruption.\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 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98515.json)\n\n**kernel: drm/nouveau: fix double-free in nvif_vmm_dtor** — 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 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":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229529,"id":"CVE-2026-98515","ts":1793019835350,"field":"cvss","old":"7.8","new":"4.7"},{"seq":229528,"id":"CVE-2026-98515","ts":1793019835350,"field":"severity","old":"high","new":"medium"},{"seq":228936,"id":"CVE-2026-98515","ts":1792854115098,"field":"cvss","old":null,"new":"7.8"},{"seq":228935,"id":"CVE-2026-98515","ts":1792854115098,"field":"severity","old":"none","new":"high"}]}