CVE-2026-90372 Linux kernel mt76 mt7915 - Buffer Underflow

Linux kernel mt76 mt7915 contains a buffer underflow caused by improper handling of peer's VHT/HE MCS map with no supported spatial stream in mt7915_mcu_get_sta_nss, letting attackers cause potential data corruption, exploit requires crafted peer MCS map.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.36% chance of exploitation in 30 days
View the NVD record ↗

Details

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

Vendor fix

Update to the latest Linux kernel version containing the fix for mt7915_mcu_get_sta_nss.

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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