{"id":"CVE-2026-90349","summary":"wifi: mt76: mt7996: fix out-of-bounds link array access in mt7996_tx()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: fix out-of-bounds link array access in mt7996_tx()\n\nWhen mac80211 leaves the link unspecified, mt7996_tx() substitutes the\nprimary link id of the station or vif. That value is\nIEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added,\nand it is then used unchecked to index vif-\u003elink_conf[],\nmvif-\u003emt76.link[] and sta-\u003elink[], all of which hold\nIEEE80211_MLD_MAX_NUM_LINKS (15) entries.\n\nClamp the primary link id to the default link before using it, and use\nthe clamped value for the link_sta fallback as well.","modified":"2026-09-19T03:47:25.982519434Z","published":"2026-09-17T16:08:57.539Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90349.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4330a0ef9f75a54fde3548432a9a698f06bab635"},{"type":"WEB","url":"https://git.kernel.org/stable/c/637bb99cc766a858d744905e46638459ca128b6c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aff81505a84d27f83b4db8e039e813930cb23c2c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90349.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90349"},{"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":"1609b014aa29f9a2bf3aaa93f71de4a06725845e"},{"fixed":"637bb99cc766a858d744905e46638459ca128b6c"},{"fixed":"aff81505a84d27f83b4db8e039e813930cb23c2c"},{"fixed":"4330a0ef9f75a54fde3548432a9a698f06bab635"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90349.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-2026-90349.json"}}],"schema_version":"1.9.0"}