Race condition in Linux kernel - CVE-2026-90185
Published: September 19, 2026
Vulnerability identifier: #VU151304
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90185
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 a denial of service.
The vulnerability exists due to a race condition in the null_blk configfs attribute store handlers when concurrently storing configuration attributes through separate configfs file descriptors. A local privileged user can perform concurrent configuration attribute stores to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90185
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/3945ce8cbce4e328e6fdf0b522dc71e340de19db
- https://git.kernel.org/stable/c/65cae82fd3c39b53430672cb9e3ecd267471a6ce
- https://git.kernel.org/stable/c/7e7fff51808237703a3a1df6dd5cae1dfd1db86d
- https://git.kernel.org/stable/c/88d806d0e1d36246208386a8e55b511c1b3d647c
- https://git.kernel.org/stable/c/8e839ed5210399a0330a8a6c5885c1d40a537c6d
- https://git.kernel.org/stable/c/c70994c2862b05e44728912b2ea9487d31e2aea7