{"id":"CVE-2026-90375","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix non-AQL packet accounting for MLO stations\n\n__mt76_tx_queue_skb() overrides the wcid passed by the driver with\nsta->drv_priv, so the wcid might incorrec…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix non-AQL packet accounting for MLO stations\n\n__mt76_tx_queue_skb() overrides the wcid passed by the driver with\nsta->drv_priv, so the wcid might incorrec…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= e1378e5228aaa1bf6bb253a379c7de1722a94e00 < f85f6933cc170155f1c7c2dffdd014965787c71b","Linux >= e1378e5228aaa1bf6bb253a379c7de1722a94e00 < fc7fae55255ccbde009232e84b102d2782a69ecf","Linux >= e1378e5228aaa1bf6bb253a379c7de1722a94e00 < 186c957ac3325aefb982567ffdd3654b283688a7","Linux >= e1378e5228aaa1bf6bb253a379c7de1722a94e00 < 8ae659743ba936b22ecb4620815887728e2820d6","Linux 5.10"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:36.720","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90375","references":[{"url":"https://git.kernel.org/stable/c/186c957ac3325aefb982567ffdd3654b283688a7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8ae659743ba936b22ecb4620815887728e2820d6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f85f6933cc170155f1c7c2dffdd014965787c71b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc7fae55255ccbde009232e84b102d2782a69ecf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90375.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90375"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536540"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90375"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90375"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90375.mbox"},{"url":"https://git.kernel.org/stable/c/2c321f86846ead00552bc65f73f5b5f1f81d4023"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.808Z","epss":0.00168,"epssPercentile":0.06155,"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-770"],"slug":"CVE-2026-90375","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix non-AQL packet accounting for MLO stations\n\n__mt76_tx_queue_skb() overrides the wcid passed by the driver with\nsta->drv_priv, so the wcid might incorrectly be changed after TX,\ncausing wcid->non_aql_packets to be counted on the wrong wcid. For\nexample, on the AP side, if a station's setup link is the 5G link and\nthe station uses 2G to transmit a frame, the value of non_aql_packets\nis increased on the 5G wcid but decreased on the 2G wcid. Once the\ninflated counter exceeds MT_MAX_NON_AQL_PKT, the TX scheduler\npermanently refuses to service the station.\n\nDrop the reassignment and account on the wcid used for transmission.\nThis also records the actual wcid in the queue entry.\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 · 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 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90375.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225621,"id":"CVE-2026-90375","ts":1792498322210,"field":"cvss","old":null,"new":"5.5"},{"seq":225620,"id":"CVE-2026-90375","ts":1792498322210,"field":"severity","old":"none","new":"medium"}]}