{"id":"CVE-2026-90353","summary":"wifi: mt76: mt7915: fix ext PHY use-after-free on register error path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: fix ext PHY use-after-free on register error path\n\nAfter mt7915_register_ext_phy() succeeded, a failure of the main PHY\nmt7915_init_debugfs() or mt7915_coredump_register() unwound through\nfree_phy2, which called ieee80211_free_hw() on the ext PHY hw while it\nwas still registered with mac80211, since mt76_unregister_device() only\nunregisters the main hw. Unregister the ext PHY (thermal + phy + hw)\nfirst and skip the redundant free.","modified":"2026-09-19T03:47:26.002403071Z","published":"2026-09-17T16:09:00.217Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90353.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421"},{"type":"WEB","url":"https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90353.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90353"},{"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":"7b8e1ae886e45aed9274048f2836a70b75ecfa40"},{"fixed":"aa55bec92ba7747dd08feff409f8074c5e052e71"},{"fixed":"ad706fcf6255494613b94418e7243d98065dbeaf"},{"fixed":"34058ad122f7524e33df8e38caba4b1d803b025a"},{"fixed":"a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5"},{"fixed":"648f5f03ff50d4bd719106ace0cdf1d8be02cbdd"},{"fixed":"15b960014f24dce5388d4a2e7274e6490cb3c421"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90353.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"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-2026-90353.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}