Improper Validation of Specified Quantity in Input in Linux kernel - CVE-2026-90379
Published: September 18, 2026
Vulnerability identifier: #VU151091
CSH Severity: Low
CVSS v4: 4.1 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90379
CWE-ID: CWE-1284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to cause a denial of service.
The vulnerability exists due to improper validation of a DMA queue index in the mt76 DMA queue handling code when processing DMA queue state after a PCIe AER error causes the bus to hang. An attacker with physical access can induce a hung PCIe bus state to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90379
Install security update from vendor's repository.