Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-90401
Published: September 18, 2026
Vulnerability identifier: #VU151081
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90401
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause data inconsistency.
The vulnerability exists due to improper handling of exceptional conditions in the Linux kernel md RAID1, RAID10, and RAID456 personalities when processing REQ_NOWAIT write requests. A local user can submit a write request that succeeds on one mirror while another returns EAGAIN to cause data inconsistency.
Affected software
Linux kernel
How to mitigate CVE-2026-90401
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3