Race condition in Linux kernel - CVE-2026-90206
Published: September 19, 2026
Vulnerability identifier: #VU151280
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90206
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause memory corruption.
The vulnerability exists due to a race condition in NVMe target controller allocation when changing a subsystem's max_qid limit during controller allocation. A local privileged user can concurrently modify the max_qid configuration and allocate a controller to cause memory corruption.
Affected software
Linux kernel
How to mitigate CVE-2026-90206
Install security update from vendor's repository.