What’s Vulnerable › Vulnerabilities

CVE-2026-23315: wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211()

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-25 · updated 2026-10-15
• Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211() Check frame length before accessing the mgmt fields in mt76_connac2_mac_write_txwi_80211 in order to avoid a possible oob access. [fix check to also cover mgmt->u.action.u.addba_req.capab, correct Fixes tag]

Affected products

• Linux kernel: from 5.10.1 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.17; from 6.19 before 6.19.7; 5.10, 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4, 7.0-rc5 (+2) — fixed in 6.1.167, 6.12.77, 6.18.17, 6.19.7, 6.6.130

How to fix

Upgrade to a fixed version: Linux kernel 6.1.167, 6.12.77, 6.18.17, 6.19.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0fb3b94a9431a3800717e5c3b6fa2e1045a15029
• https://git.kernel.org/stable/c/4e10a730d1b511ff49723371ed6d694dd1b2c785
• https://git.kernel.org/stable/c/7ae7b093b7dba9548a3bc4766b9364b97db4732d
• https://git.kernel.org/stable/c/7b692dff8df0ba5feb8df00f27d906d6eb1fe627
• https://git.kernel.org/stable/c/84419556359bc96d3fe1623d47a64c86542566cc
• https://git.kernel.org/stable/c/9612d91f617231e03c49cb9b0c02f975a3b4f51f
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html

Get alerted when CVE-2026-23315 or the next vulnerability affects your stack