{"id":"CVE-2026-98510","title":"kernel: drm/xe/vm: nuke PTs only after unlinking contested VMAs (CVE-2026-98510)","summary":"A flaw was found in the Linux kernel's Intel Xe graphics driver. When closing a GPU virtual memory space, page tables were destroyed before contested virtual memory areas were properly unlinked from shared buffer objects. A concurrent thre…","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-476","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":"2026-10-24T14:23:26+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98510.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98510.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98510"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554850"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98510"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98510"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98510.mbox"},{"url":"https://git.kernel.org/stable/c/70fddc065ac80845ffd33095b3635d59883cf7e6"},{"url":"https://git.kernel.org/stable/c/ba678c2b02e0d36b53deb5a6d5e5ea044d36def7"},{"url":"https://git.kernel.org/stable/c/bddaa5e4094c134452c29e20a26c4718827e4cb1"},{"url":"https://git.kernel.org/stable/c/24a22fb3c731474b68e986af6804db450fb88617"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00168,"epssPercentile":0.06172,"scores":{"vendor":4.7,"cna":7.8},"ingestedAt":"2026-10-18T15:45:12.285Z","slug":"CVE-2026-98510","body":"## Overview\n\nA flaw was found in the Linux kernel's Intel Xe graphics driver. When closing a GPU virtual memory space, page tables were destroyed before contested virtual memory areas were properly unlinked from shared buffer objects. A concurrent thread evicting a shared buffer object can attempt to access the already-freed page tables, triggering a NULL pointer dereference. A local user can exploit this race condition to crash the operating system, resulting in a Denial of Service (DoS).\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-2026-98510.json)\n\n**kernel: drm/xe/vm: nuke PTs only after unlinking contested VMAs** — 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":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229547,"id":"CVE-2026-98510","ts":1793019840314,"field":"cvss","old":"7.8","new":"4.7"},{"seq":229546,"id":"CVE-2026-98510","ts":1793019840314,"field":"severity","old":"high","new":"medium"},{"seq":228942,"id":"CVE-2026-98510","ts":1792854116677,"field":"cvss","old":null,"new":"7.8"},{"seq":228941,"id":"CVE-2026-98510","ts":1792854116677,"field":"severity","old":"none","new":"high"}]}