VulnerabilityPublished 26 Jun 2026Updated 21 Oct 2026

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

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 35835ff71e6e618155578b8e3905597edd5f601c : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 35835ff71e6e618155578b8e3905597edd5f601c, 9d63dd026644fa612a1fd348d5d3ab5d73df7fb8, 6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 5c14a5f944b91371961548b1907802f74a4d2e5c, < 35835ff71e6e618155578b8e3905597edd5f601c	Fixed in 35835ff71e6e618155578b8e3905597edd5f601c
LinuxLinux	Affected ≥ 5c14a5f944b91371961548b1907802f74a4d2e5c, < 9d63dd026644fa612a1fd348d5d3ab5d73df7fb8	Fixed in 9d63dd026644fa612a1fd348d5d3ab5d73df7fb8
LinuxLinux	Affected ≥ 5c14a5f944b91371961548b1907802f74a4d2e5c, < 6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952	Fixed in 6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952
LinuxLinux	Affected ≥ 5c14a5f944b91371961548b1907802f74a4d2e5c, < 4d0bf21e3e20619d51d06c0c36207aabab8b712c	Fixed in 4d0bf21e3e20619d51d06c0c36207aabab8b712c
LinuxLinux	Affected ≥ 5c14a5f944b91371961548b1907802f74a4d2e5c, < 1a4b802afe15c5b33b2dcb37a594aba2fa215d52	Fixed in 1a4b802afe15c5b33b2dcb37a594aba2fa215d52
LinuxLinux	Affected =5.12	Fixed in–

Description

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.

References

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