{"id":"CVE-2026-90353","title":"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 mt7…","summary":"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 mt7…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40 < aa55bec92ba7747dd08feff409f8074c5e052e71","Linux >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40 < ad706fcf6255494613b94418e7243d98065dbeaf","Linux >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40 < 34058ad122f7524e33df8e38caba4b1d803b025a","Linux >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40 < a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5","Linux >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40 < 648f5f03ff50d4bd719106ace0cdf1d8be02cbdd","Linux >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40 < 15b960014f24dce5388d4a2e7274e6490cb3c421","Linux 5.19"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:55.010","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90353","references":[{"url":"https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00141,"epssPercentile":0.03815,"ingestedAt":"2026-09-17T16:21:47.814Z","slug":"CVE-2026-90353","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207271,"id":"CVE-2026-90353","ts":1789757340189,"field":"cvss","old":null,"new":"7"},{"seq":207270,"id":"CVE-2026-90353","ts":1789757340189,"field":"severity","old":"none","new":"high"}]}