CVE-2026-90375

wifi: mt76: fix non-AQL packet accounting for MLO stations

State: Published
Severity: Not scored
Published: Sep 17, 2026
Updated: Oct 30, 2026
Reserved: Sep 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: fix non-AQL packet accounting for MLO stations

__mt76_tx_queue_skb() overrides the wcid passed by the driver with sta->drv_priv, so the wcid might incorrectly be changed after TX, causing wcid->non_aql_packets to be counted on the wrong wcid. For example, on the AP side, if a station's setup link is the 5G link and the station uses 2G to transmit a frame, the value of non_aql_packets is increased on the 5G wcid but decreased on the 2G wcid. Once the inflated counter exceeds MT_MAX_NON_AQL_PKT, the TX scheduler permanently refuses to service the station.

Drop the reassignment and account on the wcid used for transmission. This also records the actual wcid in the queue entry.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before f94842ee088744a9e4b3b3ce4c91e897c4e72abaAffected e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before 2c321f86846ead00552bc65f73f5b5f1f81d4023Affected e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before f85f6933cc170155f1c7c2dffdd014965787c71bAffected e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before fc7fae55255ccbde009232e84b102d2782a69ecfAffected e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before 186c957ac3325aefb982567ffdd3654b283688a7Affected e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before 8ae659743ba936b22ecb4620815887728e2820d6Affected
LinuxLinux	5.10Affected before 5.10Not affected 6.1.191 through 6.1.Not affected 6.6.160 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.52 through 6.18.Not affected 7.2.6 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before f94842ee088744a9e4b3b3ce4c91e897c4e72abaAffected
e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before 2c321f86846ead00552bc65f73f5b5f1f81d4023Affected
e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before f85f6933cc170155f1c7c2dffdd014965787c71bAffected
e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before fc7fae55255ccbde009232e84b102d2782a69ecfAffected
e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before 186c957ac3325aefb982567ffdd3654b283688a7Affected
e1378e5228aaa1bf6bb253a379c7de1722a94e00 to before 8ae659743ba936b22ecb4620815887728e2820d6Affected

LinuxLinux

5.10Affected
before 5.10Not affected
6.1.191 through 6.1.*Not affected
6.6.160 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.52 through 6.18.*Not affected
7.2.6 through 7.2.*Not affected
7.3 and laterNot affected

References

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