CVE-2026-90190

A flaw was found in the null_blk module of the Linux kernel. A race condition occurs during initialization where a mutex is accessed before it is properly set up. A local attacker, by creating a directory in /sys/kernel/config/nullb/ at a specific time, could trigger this race condition. This could lead to a kernel warning and potential system instability or a denial of service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.