{"id":"CVE-2026-90356","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: free vif links after clearing wcid entries on full reset\n\nmt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu\nwhile dev->wcid[] s…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: free vif links after clearing wcid entries on full reset\n\nmt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu\nwhile dev->wcid[] s…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= ace5d3b6b49e8391beb4d7244348ba7da5298878 < 2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad","Linux >= ace5d3b6b49e8391beb4d7244348ba7da5298878 < 8826d7a5e2dd727aa96456ccd58b33d2b080e935","Linux >= ace5d3b6b49e8391beb4d7244348ba7da5298878 < 7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7","Linux 6.18"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:34.480","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90356","references":[{"url":"https://git.kernel.org/stable/c/2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8826d7a5e2dd727aa96456ccd58b33d2b080e935","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90356.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90356"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536287"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90356"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90356"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90356.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.813Z","epss":0.00206,"epssPercentile":0.10633,"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-825"],"slug":"CVE-2026-90356","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: free vif links after clearing wcid entries on full reset\n\nmt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu\nwhile dev->wcid[] still holds pointers to the wcid embedded in each\nfreed link; mt76_reset_device() then dereferences those entries and\nruns mt76_wcid_cleanup() on them. If a grace period elapses in between,\nthe cleanup operates on freed memory.\n\nRun mt76_reset_device() first, so the wcid entries are cleaned up and\ncleared while the links are still valid.\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 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90356.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225639,"id":"CVE-2026-90356","ts":1792498328719,"field":"cvss","old":null,"new":"5.5"},{"seq":225638,"id":"CVE-2026-90356","ts":1792498328719,"field":"severity","old":"none","new":"medium"}]}