CVE-2026-64129

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

Description A spinlock leak occurs in the migrate vma insert huge pmd page() function. When the check stable address space() function fails after the PMD spinlock is acquired through pmd lock(), the execution jumps to an abort label that bypasses the spin unlock() call in unlock abort. This results in the PMD spinlock being held indefinitely, which leads to a deadlock. A deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release a resource.

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