CVE-2026-90380 Linux kernel - Use After Free

Linux kernel contains a use-after-free vulnerability in mt76_rx_poll_complete caused by a race condition where rx_status holds a pointer to a removed STA's wcid, letting attackers cause memory corruption or kernel crash, exploit requires triggering specific race conditions.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service, Privilege Escalation
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 for mt76_rx_poll_complete use-after-free.

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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