{"id":"CVE-2026-80944","title":"kernel: wifi: mwifiex: Detach sync cmd buffer on interrupted wait (CVE-2026-80944)","summary":"A flaw was found in the Linux kernel's mwifiex Wi-Fi driver. When a synchronous command's wait operation is interrupted, the driver can attempt to write data to a memory location that has already been released. This memory corruption can l…","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-416","CWE-787"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-10-24","sourceUpdated":"2026-10-24T01:47:32+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80944.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80944.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80944"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532163"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80944"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80944"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80944.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-80944"},{"url":"https://git.kernel.org/stable/c/8c67b8c50286e0cb7f18d667e6a37a2ec6e08ff9"},{"url":"https://git.kernel.org/stable/c/9024c7729eb523cf4f3a4203966d3a4aaabf030d"},{"url":"https://git.kernel.org/stable/c/9e06c9c8a1f10c55d9bc5d139656d58795e64483"},{"url":"https://git.kernel.org/stable/c/f2134d6ff30cd6e1bf63d6b0a5d8e0839f0168b3"},{"url":"https://git.kernel.org/stable/c/20ee9c03f261bf6ac59331e2ca7b46b23646412a"},{"url":"https://git.kernel.org/stable/c/b1bbeb8970eeb6c6bf3cd5314138103f7b69446d"},{"url":"https://git.kernel.org/stable/c/d29a165588b6a0cf7a38db5cbd602aef7ef8c658"},{"url":"https://git.kernel.org/stable/c/ef06882c7d8a7400b67d0d003b1008093dd589ed"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00129,"epssPercentile":0.02547,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:21:27.519317Z"},"scores":{"vendor":7,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80944","body":"## Overview\n\nA flaw was found in the Linux kernel's mwifiex Wi-Fi driver. When a synchronous command's wait operation is interrupted, the driver can attempt to write data to a memory location that has already been released. This memory corruption can lead to a system crash (kernel panic), resulting in a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80944.json)\n\n**kernel: wifi: mwifiex: Detach sync cmd buffer on interrupted wait** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-24.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\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 8\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\n## Remediation\n\nFix deferred\n\nWorkarounds / mitigations:\n\n- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228577,"id":"CVE-2026-80944","ts":1792844797136,"field":"cvss","old":"7.8","new":"4.7"},{"seq":228576,"id":"CVE-2026-80944","ts":1792844797136,"field":"severity","old":"high","new":"medium"},{"seq":223337,"id":"CVE-2026-80944","ts":1792180064019,"field":"cvss","old":"7","new":"7.8"},{"seq":202737,"id":"CVE-2026-80944","ts":1789403715373,"field":"cvss","old":"7.8","new":"7"},{"seq":183816,"id":"CVE-2026-80944","ts":1789356677516,"field":"cvss","old":"7.8","new":"5.3"},{"seq":183815,"id":"CVE-2026-80944","ts":1789356677516,"field":"severity","old":"high","new":"medium"},{"seq":153126,"id":"CVE-2026-80944","ts":1789285349133,"field":"cvss","old":null,"new":"7.8"},{"seq":153125,"id":"CVE-2026-80944","ts":1789285349133,"field":"severity","old":"none","new":"high"},{"seq":147662,"id":"CVE-2026-80944","ts":1789270211787,"field":"cvss","old":null,"new":"5.3"},{"seq":147661,"id":"CVE-2026-80944","ts":1789270211787,"field":"severity","old":"none","new":"medium"},{"seq":109416,"id":"CVE-2026-80944","ts":1789183731829,"field":"cvss","old":null,"new":"5.3"},{"seq":109415,"id":"CVE-2026-80944","ts":1789183731829,"field":"severity","old":"none","new":"medium"}]}