CVE-2026-90381 Linux kernel mt76 - Denial of Service

Linux kernel contains a vulnerability in mt76 driver caused by improper handling of channel context with different bands in mt76_switch_vif_chanctx(), letting attackers cause potential disruption during channel switches, exploit requires performing rapid channel switches on different radios.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.34% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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