SB20260918388 - Improper initialization in Linux kernel md driver
Published: September 18, 2026
Security Bulletin ID
SB20260918388
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper initialization (CVE-ID: CVE-2026-90275)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper state management in the Linux kernel md/raid1 raid1_takeover() function when initiating a RAID1 array takeover. A local user can initiate a RAID1 array takeover to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/668d99ba47210ab6ceb18f1cf022c0accca7e3bb
- https://git.kernel.org/stable/c/b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af
- https://git.kernel.org/stable/c/c57ec2749ee03cace564eec7bb37c89dc3d8d47b
- https://git.kernel.org/stable/c/dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916
- https://git.kernel.org/stable/c/f9cdb5bb8efbf401e84d850828271af87e6be2dc