{"id":"CVE-2026-89734","title":"kernel: Linux kernel: Denial of Service due to null pointer dereference in USB Video Class gadget driver (CVE-2026-89734)","summary":"A flaw was found in the Linux kernel's USB Video Class (UVC) gadget driver. This vulnerability occurs in the `uvcg_video_init()` function when the `kthread_run_worker()` function fails. In such a scenario, an error logging mechanism attemp…","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 OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-15","sourceUpdated":"2026-09-15T05:38:17+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89734.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89734.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89734"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532458"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89734"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89734"},{"url":"https://git.kernel.org/stable/c/5b1da38592efdc1a263d4c0353298cba19e9d6fc"},{"url":"https://git.kernel.org/stable/c/d511e015d06767f52bb18d48371cab6d7cb88433"},{"url":"https://git.kernel.org/stable/c/dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00166,"epssPercentile":0.0625,"ingestedAt":"2026-09-14T11:11:19.885Z","slug":"CVE-2026-89734","body":"## Overview\n\nA flaw was found in the Linux kernel's USB Video Class (UVC) gadget driver. This vulnerability occurs in the `uvcg_video_init()` function when the `kthread_run_worker()` function fails. In such a scenario, an error logging mechanism attempts to access an uninitialized pointer, leading to a null pointer dereference. This can result in a system crash, causing a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat OpenShift Container Platform 4 · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89734.json)\n\n**kernel: Linux kernel: Denial of Service due to null pointer dereference in USB Video Class gadget driver** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-15.\n\nAffected:\n\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\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":203951,"id":"CVE-2026-89734","ts":1789490230769,"field":"cvss","old":null,"new":"4.7"},{"seq":203950,"id":"CVE-2026-89734","ts":1789490230769,"field":"severity","old":"none","new":"medium"},{"seq":147155,"id":"CVE-2026-89734","ts":1789270197490,"field":"cvss","old":null,"new":"4.7"},{"seq":147154,"id":"CVE-2026-89734","ts":1789270197490,"field":"severity","old":"none","new":"medium"},{"seq":108908,"id":"CVE-2026-89734","ts":1789183729496,"field":"cvss","old":null,"new":"4.7"},{"seq":108907,"id":"CVE-2026-89734","ts":1789183729496,"field":"severity","old":"none","new":"medium"}]}