{"id":"CVE-2026-90356","summary":"wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset","details":"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-\u003ewcid[] 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.","modified":"2026-09-19T03:47:28.979163340Z","published":"2026-09-17T16:09:02.189Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90356.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8826d7a5e2dd727aa96456ccd58b33d2b080e935"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90356.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90356"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ace5d3b6b49e8391beb4d7244348ba7da5298878"},{"fixed":"2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad"},{"fixed":"8826d7a5e2dd727aa96456ccd58b33d2b080e935"},{"fixed":"7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90356.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90356.json"}}],"schema_version":"1.9.0"}