{"id":"CVE-2026-98421","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: require a peer station for TDLS setup confirm\n\nIt's nonsense for the setup confirm to go to station that\ndoesn't even exist, and it hits a warning when …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: require a peer station for TDLS setup confirm\n\nIt's nonsense for the setup confirm to go to station that\ndoesn't even exist, and it hits a warning when …","severity":"medium","published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T14:17:53.573","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98421","references":[{"url":"https://git.kernel.org/stable/c/038e1d126304fd25d507fd4e671232df57bd1799","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1c0a5c96473b9e7a5f4c453ef6a13dc0f5589a4b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6bae6ef511a29ef12ab969adeea691067d4d5d74","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/742c762bee59c973684f70dfed7de4945d3141e2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d0afa5395c46d73ad2090aa50209886e84f179bd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fce36d242a18ddf64731d816a37564103172da11","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98421.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98421"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2552196"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98421"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98421"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98421.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-14T15:36:13.988Z","vendor":"Linux","product":"Linux","affected":["Linux >= 6f7eaa47e1de30159277f91f1145a6687f13ffd9 < 6bae6ef511a29ef12ab969adeea691067d4d5d74","Linux >= 6f7eaa47e1de30159277f91f1145a6687f13ffd9 < d0afa5395c46d73ad2090aa50209886e84f179bd","Linux >= 6f7eaa47e1de30159277f91f1145a6687f13ffd9 < 742c762bee59c973684f70dfed7de4945d3141e2","Linux >= 6f7eaa47e1de30159277f91f1145a6687f13ffd9 < fce36d242a18ddf64731d816a37564103172da11","Linux >= 6f7eaa47e1de30159277f91f1145a6687f13ffd9 < 1c0a5c96473b9e7a5f4c453ef6a13dc0f5589a4b","Linux >= 6f7eaa47e1de30159277f91f1145a6687f13ffd9 < 038e1d126304fd25d507fd4e671232df57bd1799","Linux 3.17"],"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-617"],"epss":0.00215,"epssPercentile":0.11806,"slug":"CVE-2026-98421","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: require a peer station for TDLS setup confirm\n\nIt's nonsense for the setup confirm to go to station that\ndoesn't even exist, and it hits a warning when building\nthe frame:\n\n  WARN_ON_ONCE(!sta || !ap_sta)\n\nOnly accept WLAN_TDLS_SETUP_CONFIRM when the station is\nalready there as a TDLS station. Need to copy the call\nto ieee80211_tdls_prep_mgmt_packet() since the existing\nWLAN_TDLS_DISCOVERY_REQUEST already falls through to it.\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** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98421.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":224097,"id":"CVE-2026-98421","ts":1792324918008,"field":"cvss","old":null,"new":"5.5"},{"seq":224096,"id":"CVE-2026-98421","ts":1792324918008,"field":"severity","old":"none","new":"medium"}]}