CVE-2026-90353

high

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/ad706fcf6255494613b94418e7243d98065dbeaf

https://git.kernel.org/stable/c/aa55bec92ba7747dd08feff409f8074c5e052e71

https://git.kernel.org/stable/c/a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5

https://git.kernel.org/stable/c/648f5f03ff50d4bd719106ace0cdf1d8be02cbdd

https://git.kernel.org/stable/c/34058ad122f7524e33df8e38caba4b1d803b025a

https://git.kernel.org/stable/c/15b960014f24dce5388d4a2e7274e6490cb3c421

Details

Source: Mitre, NVD

Published: 2026-09-17

Updated: 2026-09-18

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00206