CVE-2026-53317
wifi: mt76: mt7921: Place upper limit on station AID
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.
INFO
Published Date :
June 26, 2026, 8:17 p.m.
Last Modified :
July 6, 2026, 8:12 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update firmware for affected devices.
- Configure hostapd to use lower AID values.
- Apply the kernel fix for mt76 driver.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53317.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53317 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53317
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53317 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53317 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 6.12.91 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1a4b802afe15c5b33b2dcb37a594aba2fa215d52 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/35835ff71e6e618155578b8e3905597edd5f601c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4d0bf21e3e20619d51d06c0c36207aabab8b712c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 26, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5c14a5f944b91371961548b1907802f74a4d2e5c', 'lessThan': '6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952', 'versionType': 'git'}, {'status': 'affected', 'version': '5c14a5f944b91371961548b1907802f74a4d2e5c', 'lessThan': '35835ff71e6e618155578b8e3905597edd5f601c', 'versionType': 'git'}, {'status': 'affected', 'version': '5c14a5f944b91371961548b1907802f74a4d2e5c', 'lessThan': '1a4b802afe15c5b33b2dcb37a594aba2fa215d52', 'versionType': 'git'}, {'status': 'affected', 'version': '5c14a5f944b91371961548b1907802f74a4d2e5c', 'lessThan': '4d0bf21e3e20619d51d06c0c36207aabab8b712c', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7921/main.c', 'drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7921/main.c', 'drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/1a4b802afe15c5b33b2dcb37a594aba2fa215d52 Added Reference https://git.kernel.org/stable/c/35835ff71e6e618155578b8e3905597edd5f601c Added Reference https://git.kernel.org/stable/c/4d0bf21e3e20619d51d06c0c36207aabab8b712c Added Reference https://git.kernel.org/stable/c/6dbe70f9ef14d8ac1c24bf19fd9510978a3ab952