#VU124551 Out-of-bounds write in Linux kernel - CVE-2026-23315
Published: March 25, 2026
Vulnerability identifier: #VU124551
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-23315
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the mt76_connac2_mac_write_txwi_80211 function when handling Wi-Fi management frames. A remote attacker can send a specially crafted 802.11 frame with an undersized payload to trigger an out-of-bounds write access.
Exploitation does not require authentication or user interaction.
Remediation
Install security update from vendor's repository.
External links
- 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