{"id":"CVE-2026-98876","title":"kernel: host1x: bus: Fix missing ops null check in error teardown (CVE-2026-98876)","summary":"A flaw was found in the Linux kernel's Host1x bus driver. This vulnerability can lead to a Denial of Service (DoS) by causing a system crash. During device initialization error handling, the driver attempts to access client operations with…","severity":"medium","cvss":4.1,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/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":"2026-10-23","updated":"2026-10-26","sourceUpdated":"2026-10-26T11:01:50+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98876.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98876.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98876"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2559544"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98876"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98876"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98876.mbox"},{"url":"https://git.kernel.org/stable/c/d8d5b6e02fc281dea33d6b0b0fadaccea56f2067"},{"url":"https://git.kernel.org/stable/c/f1fa6c936fa9de80ae446ba5e76e227e991b8e56"},{"url":"https://git.kernel.org/stable/c/74bd1f05d9ba2d6672d30ccafe80a38104c1f73f"},{"url":"https://git.kernel.org/stable/c/62851e7b0e55de6fe08da08bc41fd587fbcb0e9b"},{"url":"https://git.kernel.org/stable/c/29375e071ea201fe97bafe1d2ad9d9f30311abfb"},{"url":"https://git.kernel.org/stable/c/71d25f668bc5c0f36ea843462e12307dea45aaa3"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00179,"epssPercentile":0.074,"ingestedAt":"2026-10-23T13:24:55.584Z","slug":"CVE-2026-98876","body":"## Overview\n\nA flaw was found in the Linux kernel's Host1x bus driver. This vulnerability can lead to a Denial of Service (DoS) by causing a system crash. During device initialization error handling, the driver attempts to access client operations without first verifying their presence. A local user capable of triggering these initialization failure conditions can cause a null pointer dereference that halts the operating system.\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 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98876.json)\n\n**kernel: host1x: bus: Fix missing ops null check in error teardown** — rated Moderate by Red Hat. Released 2026-10-23, updated 2026-10-26.\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 OpenShift Container Platform 4\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":22.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229314,"id":"CVE-2026-98876","ts":1793019682215,"field":"cvss","old":null,"new":"4.1"},{"seq":229313,"id":"CVE-2026-98876","ts":1793019682215,"field":"severity","old":"none","new":"medium"}]}