High 7.0Published Sep 17, 2026

CVE-2026-90353wifi: mt76: mt7915: fix ext PHY use-after-free on register error path

Updated under an hour ago (Oct 26, 2026, 5:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix ext PHY use-after-free on register error path After mt7915_register_ext_phy() succeeded, a failure of the main PHY mt7915_init_debugfs() or mt7915_coredump_register() unwound through free_phy2, which called ieee80211_free_hw() on the ext PHY hw while it was still registered with mac80211, since mt76_unregister_device() only unregisters the main hw. Unregister the ext PHY (thermal + phy + hw) first and skip the redundant free.

CVSS: 7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 7b8e1ae886e45aed9274048f2836a70b75ecfa40 before aa55bec92ba7747dd08feff409f8074c5e052e71; from 7b8e1ae886e45aed9274048f2836a70b75ecfa40 before ad706fcf6255494613b94418e7243d98065dbeaf; from 7b8e1ae886e45aed9274048f2836a70b75ecfa40 before 34058ad122f7524e33df8e38caba4b1d803b025a; from 7b8e1ae886e45aed9274048f2836a70b75ecfa40 before a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5; from 7b8e1ae886e45aed9274048f2836a70b75ecfa40 before 648f5f03ff50d4bd719106ace0cdf1d8be02cbdd; from 7b8e1ae886e45aed9274048f2836a70b75ecfa40 before 15b960014f24dce5388d4a2e7274e6490cb3c421	CNA record

References

References

https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71
https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf
https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a
https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5
https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd
https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.