CVE-2026-90390

Summary

In the Linux kernel, the following vulnerability has been resolved:

md/bitmap: resume array on backlog_store() error path

backlog_store() suspends the array before checking whether a write-mostly device exists. If no such device exists, the error path only unlocks reconfig_mutex and leaves the array suspended, blocking subsequent I/O.

Use mddev_unlock_and_resume() to release both states.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux58226942ad3d1423785f815ede5bcc832574f2ea < 03aad318f0a1f039dddf98739e705fdca3bf0d86affected
LinuxLinux58226942ad3d1423785f815ede5bcc832574f2ea < 6763fb409a0b4106676a52cf934440d9484b32c8affected
LinuxLinux58226942ad3d1423785f815ede5bcc832574f2ea < cc543e769b97d563b089b9e0ebf8ad361d15076faffected
LinuxLinux58226942ad3d1423785f815ede5bcc832574f2ea < 2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dcaffected
LinuxLinux6.7affected
LinuxLinux0 < 6.7unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References