SB20260918304 - Incorrect calculation in Linux kernel mt76 mt7996 driver
Published: September 18, 2026
Security Bulletin ID
SB20260918304
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect calculation (CVE-ID: CVE-2026-90376)
CWE-ID: CWE-682 - Incorrect Calculation
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.