CVE-2026-90353

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7b8e1ae886e45aed9274048f2836a70b75ecfa40 < aa55bec92ba7747dd08feff409f8074c5e052e71affected
LinuxLinux7b8e1ae886e45aed9274048f2836a70b75ecfa40 < ad706fcf6255494613b94418e7243d98065dbeafaffected
LinuxLinux7b8e1ae886e45aed9274048f2836a70b75ecfa40 < 34058ad122f7524e33df8e38caba4b1d803b025aaffected
LinuxLinux7b8e1ae886e45aed9274048f2836a70b75ecfa40 < a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5affected
LinuxLinux7b8e1ae886e45aed9274048f2836a70b75ecfa40 < 648f5f03ff50d4bd719106ace0cdf1d8be02cbddaffected
LinuxLinux7b8e1ae886e45aed9274048f2836a70b75ecfa40 < 15b960014f24dce5388d4a2e7274e6490cb3c421affected
LinuxLinux5.19affected
LinuxLinux0 < 5.19unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References