CVE-2026-90353

Description

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.

References

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