{"id":"CVE-2026-80939","title":"kernel: wifi: rtw89: pci: add .shutdown callback to stop rfkill polling on reboot (CVE-2026-80939)","summary":"A flaw was found in the Linux kernel's rtw89 PCI driver. During a warm reboot on ARM64 platforms, the driver's missing shutdown callback fails to stop radio frequency kill (rfkill) polling. This leads to attempts to read from a non-respond…","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-772","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":"2026-09-14T15:59:59+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80939.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80939.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80939"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532422"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80939"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80939"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80939.mbox"},{"url":"https://git.kernel.org/stable/c/9693980cd7d2f5b17e5ef5922b922f2e1a770fca"},{"url":"https://git.kernel.org/stable/c/c1f214dd1351244156deb57761b14190a233aef6"},{"url":"https://git.kernel.org/stable/c/667c12782aaf8dd3cb2213e528fe63a73cb63345"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00166,"epssPercentile":0.06246,"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80939","body":"## Overview\n\nA flaw was found in the Linux kernel's rtw89 PCI driver. During a warm reboot on ARM64 platforms, the driver's missing shutdown callback fails to stop radio frequency kill (rfkill) polling. This leads to attempts to read from a non-responding device, causing a fatal asynchronous SError and resulting in a kernel panic, effectively a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · 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-2026-80939.json)\n\n**kernel: wifi: rtw89: pci: add .shutdown callback to stop rfkill polling on reboot** — rated Low 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\nFix deferred","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202724,"id":"CVE-2026-80939","ts":1789403715294,"field":"cvss","old":null,"new":"5.5"},{"seq":202723,"id":"CVE-2026-80939","ts":1789403715294,"field":"severity","old":"none","new":"medium"},{"seq":147249,"id":"CVE-2026-80939","ts":1789270204353,"field":"cvss","old":null,"new":"4.7"},{"seq":147248,"id":"CVE-2026-80939","ts":1789270204353,"field":"severity","old":"none","new":"medium"},{"seq":108996,"id":"CVE-2026-80939","ts":1789183729885,"field":"cvss","old":null,"new":"4.7"},{"seq":108995,"id":"CVE-2026-80939","ts":1789183729885,"field":"severity","old":"none","new":"medium"}]}