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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 6
https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ad706fcf6255494613b94418e7243d98065dbeaf
416baaa9-dc9f-4396-8d5f-8c081fb06d67