CVE-2026-53125

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A deadlock occurs in the Linux kernel when the value "clear" is written to the array state variable. The md attr store() function breaks sysfs active protection to allow an array to delete itself from its own sysfs store method. However, because md attr store() drops the mddev reference before calling sysfs unbreak active protection(), the temporary kobject reference can become the last reference protecting the md kobject. This leads to kobject teardown recursing into kernfs removal while the current sysfs node is still being unwound, resulting in recursive locking on kn->active with kernfs drain() in the call chain.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.