CVE-2026-52973

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

Description A flaw in the futex subsystem occurs because the need futex hash allocate default() function incorrectly relies on CLONE THREAD semantics. This dependency breaks non-concurrency assumptions during mm->futex ref per-CPU allocations when the memory management structure is shared via CLONE VM clones, excluding vfork(). This can lead to a slab-use-after-free condition in the futex hash put() function, resulting in memory corruption and potential system instability.

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