Incorrect calculation in Linux kernel - CVE-2026-90376
Published: September 18, 2026
Vulnerability identifier: #VU151117
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90376
CWE-ID: CWE-682
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to incorrect MLD ID assignment in the mt7996 MAC transmission descriptor handling when transmitting frames directed to a third link while that link is in power-saving mode. A remote attacker can transmit frames directed to a third link to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90376
Install security update from vendor's repository.