Improper Check for Unusual or Exceptional Conditions in Linux kernel - CVE-2026-90381
Published: September 25, 2026
Vulnerability identifier: #VU152199
CSH Severity: High
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90381
CWE-ID: CWE-754
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.
The vulnerability exists due to improper handling of channel contexts in mt76_switch_vif_chanctx() when performing channel switches on different radios within a short timeframe. A remote attacker can perform channel switches on different radios within a short timeframe to compromise confidentiality, integrity, and availability.
Affected software
Linux kernel
How to mitigate CVE-2026-90381
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3