{"id":"CVE-2026-80947","title":"kernel: wifi: rtl8xxxu: fix use-after-free from rx_urb_wq on stop (CVE-2026-80947)","summary":"A flaw was found in the Linux kernel's `rtl8xxxu` Wi-Fi driver. A race condition exists during the driver's stop process, specifically when handling receive (RX) Universal Serial Bus (USB) Request Blocks (URBs). This allows a worker to acc…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T16:46:30+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80947.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80947.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80947"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532317"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80947"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80947"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80947.mbox"},{"url":"https://git.kernel.org/stable/c/800d2b490a9af1e7132a3564c2ad5a81292e5b40"},{"url":"https://git.kernel.org/stable/c/620acb1e8037b73a457dc8ef20fc23fc7adcb405"},{"url":"https://git.kernel.org/stable/c/972ab8b9c08f3eb3fa535082de2950dd93604dfd"},{"url":"https://git.kernel.org/stable/c/6c080026ecc17eecb103f8927c64ea73a74bb818"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00159,"epssPercentile":0.05431,"scores":{"vendor":5.5,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.476Z","slug":"CVE-2026-80947","body":"## Overview\n\nA flaw was found in the Linux kernel's `rtl8xxxu` Wi-Fi driver. A race condition exists during the driver's stop process, specifically when handling receive (RX) Universal Serial Bus (USB) Request Blocks (URBs). This allows a worker to access memory that has already been freed, leading to a use-after-free vulnerability. This issue can result in system instability or a denial of service.\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 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80947.json)\n\n**kernel: wifi: rtl8xxxu: fix use-after-free from rx_urb_wq on stop** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\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\nAffected","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204252,"id":"CVE-2026-80947","ts":1789490240638,"field":"cvss","old":"5.5","new":"7"},{"seq":204251,"id":"CVE-2026-80947","ts":1789490240638,"field":"severity","old":"medium","new":"high"},{"seq":202734,"id":"CVE-2026-80947","ts":1789403715354,"field":"cvss","old":"7.8","new":"5.5"},{"seq":202733,"id":"CVE-2026-80947","ts":1789403715354,"field":"severity","old":"high","new":"medium"},{"seq":183817,"id":"CVE-2026-80947","ts":1789356677525,"field":"cvss","old":"7.8","new":"7.1"},{"seq":153130,"id":"CVE-2026-80947","ts":1789285349150,"field":"cvss","old":null,"new":"7.8"},{"seq":153129,"id":"CVE-2026-80947","ts":1789285349150,"field":"severity","old":"none","new":"high"},{"seq":147393,"id":"CVE-2026-80947","ts":1789270210729,"field":"cvss","old":null,"new":"7.1"},{"seq":147392,"id":"CVE-2026-80947","ts":1789270210729,"field":"severity","old":"none","new":"high"},{"seq":109145,"id":"CVE-2026-80947","ts":1789183730486,"field":"cvss","old":null,"new":"7.1"},{"seq":109144,"id":"CVE-2026-80947","ts":1789183730486,"field":"severity","old":"none","new":"high"}]}