Medium 5.5Published Jun 26, 2026

CVE-2026-53317wifi: mt76: mt7921: Place upper limit on station AID

Updated under an hour ago (Oct 27, 2026, 1:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 5c14a5f944b91371961548b1907802f74a4d2e5c before 9d63dd026644fa612a1fd348d5d3ab5d73df7fb8; from 5c14a5f944b91371961548b1907802f74a4d2e5c before 6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952; from 5c14a5f944b91371961548b1907802f74a4d2e5c before 35835ff71e6e618155578b8e3905597edd5f601c; 5c14a5f944b91371961548b1907802f74a4d2e5c builds before 1a4b802afe15c5b33b2dcb37a594aba2fa215d52; 5c14a5f944b91371961548b1907802f74a4d2e5c builds before 4d0bf21e3e20619d51d06c0c36207aabab8b712c	CNA record
linux linux_kernel linux:linux_kernel	from 5.12 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10	NVD

References

References

https://git.kernel.org/stable/c/9d63dd026644fa612a1fd348d5d3ab5d73df7fb8
https://git.kernel.org/stable/c/6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952	patch
https://git.kernel.org/stable/c/35835ff71e6e618155578b8e3905597edd5f601c	patch
https://git.kernel.org/stable/c/1a4b802afe15c5b33b2dcb37a594aba2fa215d52	patch
https://git.kernel.org/stable/c/4d0bf21e3e20619d51d06c0c36207aabab8b712c	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.