CVE-2026-74599

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

Description A race condition exists in the Linux kernel during page table freeing. While previous fixes addressed races over init mm, the issue persists on x86 and arm64 architectures when a ptdump is performed over a memory descriptor other than init mm via the ptdump walk pgd() function. This occurs because kernel memory ranges are shared across non-kernel memory descriptors. The issue is resolved by acquiring a nested mmap write lock for init mm within ptdump walk pgd() and updating walk page range debug() to assert that init mm is write locked.

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