{"api_version":"1","generated_at":"2026-09-18T23:46:28+00:00","cve":"CVE-2026-90353","urls":{"html":"https://cve.report/CVE-2026-90353","api":"https://cve.report/api/cve/CVE-2026-90353.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90353","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90353"},"summary":{"title":"wifi: mt76: mt7915: fix ext PHY use-after-free on register error path","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:34","updated_at":"2026-09-18 18:17:55"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a","name":"https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71","name":"https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421","name":"https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd","name":"https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf","name":"https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5","name":"https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90353","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90353","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7b8e1ae886e45aed9274048f2836a70b75ecfa40 aa55bec92ba7747dd08feff409f8074c5e052e71 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7b8e1ae886e45aed9274048f2836a70b75ecfa40 ad706fcf6255494613b94418e7243d98065dbeaf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7b8e1ae886e45aed9274048f2836a70b75ecfa40 34058ad122f7524e33df8e38caba4b1d803b025a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7b8e1ae886e45aed9274048f2836a70b75ecfa40 a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7b8e1ae886e45aed9274048f2836a70b75ecfa40 648f5f03ff50d4bd719106ace0cdf1d8be02cbdd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7b8e1ae886e45aed9274048f2836a70b75ecfa40 15b960014f24dce5388d4a2e7274e6490cb3c421 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/mediatek/mt76/mt7915/init.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"aa55bec92ba7747dd08feff409f8074c5e052e71","status":"affected","version":"7b8e1ae886e45aed9274048f2836a70b75ecfa40","versionType":"git"},{"lessThan":"ad706fcf6255494613b94418e7243d98065dbeaf","status":"affected","version":"7b8e1ae886e45aed9274048f2836a70b75ecfa40","versionType":"git"},{"lessThan":"34058ad122f7524e33df8e38caba4b1d803b025a","status":"affected","version":"7b8e1ae886e45aed9274048f2836a70b75ecfa40","versionType":"git"},{"lessThan":"a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5","status":"affected","version":"7b8e1ae886e45aed9274048f2836a70b75ecfa40","versionType":"git"},{"lessThan":"648f5f03ff50d4bd719106ace0cdf1d8be02cbdd","status":"affected","version":"7b8e1ae886e45aed9274048f2836a70b75ecfa40","versionType":"git"},{"lessThan":"15b960014f24dce5388d4a2e7274e6490cb3c421","status":"affected","version":"7b8e1ae886e45aed9274048f2836a70b75ecfa40","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/mediatek/mt76/mt7915/init.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV3_1":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:L - The UAF is in mt7915_register_device()'s free_phy2 unwind, reached only from mt7915_pci_probe() and mt798x_wmac_probe() when mt7915_init_debugfs() or mt7915_coredump_register() fails after mt7915_register_ext_phy(); no 802.11 frame or nl80211 command supplies the triggering data.\nAC:H - mt7915_init_debugfs() always returns 0, so the live branch is mt7915_coredump_register() failing its vzalloc of struct mt7915_crash_data after mt7915_alloc_ext_phy() produced phy2 (DBDC). That one-shot ENOMEM during pci/platform probe is not something an attacker can reliably force.\nPR:L - After ieee80211_free_hw() on the still-registered ext PHY, mt76_unregister_device() drops only the main hw, leaving the ext wiphy, the default STA vif from ieee80211_register_hw(), and mt7915_thermal_ops (cdev->devdata = phy) reachable via nl80211 and thermal sysfs without init-namespace root or PCI bind capability.\nUI:N - No victim must mount media or open a file; once the probe unwind runs, udev, mac80211's leftover workqueue/inetaddr notifier, or the attacker’s own nl80211/thermal access touches the still-registered ext PHY.\nS:U - ieee80211_free_hw() frees the ext PHY's ieee80211_local/wiphy/sband while mac80211 still holds it; impact is host-kernel heap corruption, not a VM, IOMMU, or sandbox escape.\nC:H - ieee80211_free_hw() kfree's the ext PHY's still-registered wiphy bands and wiphy_free()s the hw while cfg80211 and mt7915_thermal_get_cur_throttle_state() still dereference that phy via cdev->devdata, a UAF read primitive.\nI:H - The leftover ext-PHY object is written by mt7915_thermal_set_cur_throttle_state() (phy->cdev_state and mt7915_mcu_set_thermal_throttling) and by mac80211 workqueues never torn down by ieee80211_unregister_hw(), enabling UAF writes and control-flow hijack.\nA:H - ieee80211_free_hw() without ieee80211_unregister_hw() leaves mac80211 workqueues, inetaddr notifiers, and the default wlan vif running against freed ieee80211_local, which oopses or panics on the next access."}]}],"providerMetadata":{"dateUpdated":"2026-09-18T17:54:48.057Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71"},{"url":"https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf"},{"url":"https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a"},{"url":"https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5"},{"url":"https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd"},{"url":"https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421"}],"title":"wifi: mt76: mt7915: fix ext PHY use-after-free on register error path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90353","datePublished":"2026-09-17T16:09:00.217Z","dateReserved":"2026-09-11T19:38:34.805Z","dateUpdated":"2026-09-18T17:54:48.057Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:34","lastModifiedDate":"2026-09-18 18:17:55","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90353","Ordinal":"1","Title":"wifi: mt76: mt7915: fix ext PHY use-after-free on register error","CVE":"CVE-2026-90353","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90353","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"wifi: mt76: mt7915: fix ext PHY use-after-free on register error"}]}}}