Improper initialization in Linux kernel - CVE-2026-90385
Published: September 18, 2026
Vulnerability identifier: #VU151100
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90385
CWE-ID: CWE-665
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 improper initialization in the md/raid1 serial pool creation logic when adding a new rdev to an existing RAID1 array with serialize policy enabled. A local privileged user can add a new rdev to a configured RAID1 array to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90385
Install security update from vendor's repository.