In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7921: Place upper limit on station AID
Any station configured with an AID over 20 causes a firmware crash. This situation occurred in our testing using an AP interface on 7922 hardware, with a modified hostapd, sourced from Mediatek's OpenWRT feeds.
In stock hostapd, station AIDs begin counting at 1, and this configuration is prevented with an upper limit on associated stations. However, the modified hostapd began allocation at 65, which caused the firmware to crash. This fix does not allow these AIDs to work, but will prevent the firmware crash.
This crash was only seen on IFTYPE_AP interfaces, and the fix does not appear to have an effect on IFTYPE_STATION behavior.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jun 26, 2026 |
| Ubuntu | — | Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-7.0.0-1003-gkeUpgrade linux-image-gcp-7.0Upgrade linux-image-azure-fde-7.0Upgrade linux-image-genericUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-1009-oemUpgrade linux-image-gcpUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-ibm-7.0Upgrade linux-image-oem-26.04Upgrade linux-image-virtualUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-7.0.0-1009-awsUpgrade linux-image-azure-fdeUpgrade linux-image-ibmUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-aws-64k-7.0Upgrade linux-image-nvidia-7.0Upgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-raspi-realtimeUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-generic-64kUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-azureUpgrade linux-image-generic-64k-7.0Upgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-gke-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-oem-24.04dUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidiaUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-28-generic-64kUpgrade linux-image-raspiUpgrade linux-image-oem-26.04aUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-gcp-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-aws-64kUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-7.0.0-28-realtime-64kUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-awsUpgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-nvidia-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-7.0.0-28-genericUpgrade linux-image-raspi-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-7.0.0-28-realtimeUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-7.0.0-1008-gcp-64kUpgrade linux-image-gke-64k-7.0Upgrade linux-image-generic-7.0Upgrade linux-image-nvidia-bosUpgrade linux-image-virtual-7.0Upgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-realtime-7.0Upgrade linux-image-realtime-64kUpgrade linux-image-realtimeUpgrade linux-image-gkeUpgrade linux-image-oem-24.04cUpgrade linux-image-oracleUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04Upgrade linux-image-azure-7.0Upgrade linux-image-oem-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-7.0.0-1008-gcpUpgrade linux-image-7.0.0-1003-gke-64k | Jul 20, 2026 | Jun 26, 2026 |
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