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CVE-2026-90353

HIGHCVSS 7/10

Last modified

CVE-2026-90353 is a high-severity vulnerability rated 7/10 on the CVSS scale. 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..

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.

Metrics

CVSS 3.1
7/10

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

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 7b8e1ae886e45aed9274048f2836a70b75ecfa40, < aa55bec92ba7747dd08feff409f8074c5e052e71; >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40, < ad706fcf6255494613b94418e7243d98065dbeaf; >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40, < 34058ad122f7524e33df8e38caba4b1d803b025a; >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40, < a7fd3bae8e11a7c00df6a5021d9ef248ae9f9bf5; >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40, < 648f5f03ff50d4bd719106ace0cdf1d8be02cbdd; >= 7b8e1ae886e45aed9274048f2836a70b75ecfa40, < 15b960014f24dce5388d4a2e7274e6490cb3c421
LinuxLinux5.19

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90353?
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.
How severe is CVE-2026-90353?
CVE-2026-90353 has a CVSS score of 7/10 (HIGH severity).
How do I fix CVE-2026-90353?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST