CVE-2026-90375

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

N/A
Published: September 17, 2026 at 04:09 PM UTC
Updated: October 21, 2026 at 01:20 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.10e1378e5228aaa1bf6bb253a379c7de1722a94e00
Vendor states this is fixed in 186c957ac3325aefb982567ffdd3654b283688a7 (fixed)
Vendor states this is fixed in 8ae659743ba936b22ecb4620815887728e2820d6 (fixed)
Vendor states this is fixed in f85f6933cc170155f1c7c2dffdd014965787c71b (fixed)
Vendor states this is fixed in fc7fae55255ccbde009232e84b102d2782a69ecf (fixed)
Vendor states this is fixed in 5.10 (unaffected)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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