{"id":"CVE-2026-89553","title":"kernel: nouveau/gem: reserve the bo in the info ioctl around the vma lookup (CVE-2026-89553)","summary":"A flaw was found in the Linux kernel's nouveau/gem component. A race condition exists where the graphics execution manager (GEM) close path can close a virtual memory area (VMA) while an information lookup is still trying to access it. Thi…","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-416","CWE-367"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-10-24","sourceUpdated":"2026-10-24T00:47:37+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89553.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89553.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89553"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532079"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89553"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89553"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89553.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-89553"},{"url":"https://git.kernel.org/stable/c/e05c28bd6043d0fd0bea9c3fc49300a8871a1a81"},{"url":"https://git.kernel.org/stable/c/208867763843aa82efcbe3b771f1b8e6c7aa820a"},{"url":"https://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409"},{"url":"https://git.kernel.org/stable/c/e60466011ac3a6b8045e6cc3c2cbb30d58039d2e"},{"url":"https://git.kernel.org/stable/c/5e17160d41d92823f3379c1982e1369680c5ce4d"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00134,"epssPercentile":0.02896,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:23:54.129922Z"},"scores":{"vendor":7,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.451Z","slug":"CVE-2026-89553","body":"## Overview\n\nA flaw was found in the Linux kernel's nouveau/gem component. A race condition exists where the graphics execution manager (GEM) close path can close a virtual memory area (VMA) while an information lookup is still trying to access it. This timing issue leads to a use-after-free vulnerability, which could allow a local attacker to potentially achieve arbitrary code execution or cause a denial of service.\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 7, 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 7, Red Hat Enterprise Linux 8, … · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89553.json)\n\n**kernel: nouveau/gem: reserve the bo in the info ioctl around the vma lookup** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-24.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\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\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 10\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\nOut of support scope\n\nWorkarounds / mitigations:\n\n- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228583,"id":"CVE-2026-89553","ts":1792844799250,"field":"cvss","old":"7.8","new":"4.7"},{"seq":228582,"id":"CVE-2026-89553","ts":1792844799250,"field":"severity","old":"high","new":"medium"},{"seq":223285,"id":"CVE-2026-89553","ts":1792180043528,"field":"cvss","old":"7","new":"7.8"},{"seq":204163,"id":"CVE-2026-89553","ts":1789490235086,"field":"cvss","old":"7.8","new":"7"},{"seq":197931,"id":"CVE-2026-89553","ts":1789384321014,"field":"cvss","old":"7","new":"7.8"},{"seq":183484,"id":"CVE-2026-89553","ts":1789356675559,"field":"cvss","old":"7.8","new":"7"},{"seq":153360,"id":"CVE-2026-89553","ts":1789285350196,"field":"cvss","old":null,"new":"7.8"},{"seq":153359,"id":"CVE-2026-89553","ts":1789285350196,"field":"severity","old":"none","new":"high"},{"seq":147796,"id":"CVE-2026-89553","ts":1789270212323,"field":"cvss","old":null,"new":"7"},{"seq":147795,"id":"CVE-2026-89553","ts":1789270212323,"field":"severity","old":"none","new":"high"},{"seq":109550,"id":"CVE-2026-89553","ts":1789183732378,"field":"cvss","old":null,"new":"7"},{"seq":109549,"id":"CVE-2026-89553","ts":1789183732378,"field":"severity","old":"none","new":"high"}]}