{"id":"CVE-2026-89734","title":"usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()\n\nIn uvcg_video_init(), if kthread_run_worker() fails,\nthe error logged uses uvcg_err(), however, the…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-476"],"vendor":"Linux","product":"Linux","affected":["Linux >= f0bbfbd16b3b67106535299d6a9ca3a5565494a6 < dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2","Linux >= f0bbfbd16b3b67106535299d6a9ca3a5565494a6 < d511e015d06767f52bb18d48371cab6d7cb88433","Linux >= f0bbfbd16b3b67106535299d6a9ca3a5565494a6 < 5b1da38592efdc1a263d4c0353298cba19e9d6fc","Linux 6.13"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:51:47.513Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89734","references":[{"url":"https://git.kernel.org/stable/c/dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2"},{"url":"https://git.kernel.org/stable/c/d511e015d06767f52bb18d48371cab6d7cb88433"},{"url":"https://git.kernel.org/stable/c/5b1da38592efdc1a263d4c0353298cba19e9d6fc"},{"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/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89734.mbox"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00206,"epssPercentile":0.10612,"ingestedAt":"2026-09-14T11:11:19.885Z","slug":"CVE-2026-89734","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()\n\nIn uvcg_video_init(), if kthread_run_worker() fails,\nthe error logged uses uvcg_err(), however, the pointer it uses:\nvideo->uvc is not assigned at this point, triggering a null\npointer dereference. Fix this by directly using uvc->func which\nis assigned already.\n\n## Affected\n\n- `Linux >= f0bbfbd16b3b67106535299d6a9ca3a5565494a6 < dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2`\n- `Linux >= f0bbfbd16b3b67106535299d6a9ca3a5565494a6 < d511e015d06767f52bb18d48371cab6d7cb88433`\n- `Linux >= f0bbfbd16b3b67106535299d6a9ca3a5565494a6 < 5b1da38592efdc1a263d4c0353298cba19e9d6fc`\n- `Linux 6.13`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89734.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":208958,"id":"CVE-2026-89734","ts":1790062299656,"field":"cvss","old":"4.7","new":"5.5"},{"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"}]}