The vulnerability of the unuse_mm() function in the mm/swapfile.c module of the Linux kernel’s memory-management subsystem allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the unusemm function in the mm/swapfile.c module of the Linux kernel’s memory-management subsystem is related to the assignment of the NULL pointer. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the...

CVE-2025-39992

CVE-2025-39992 pertains to a race in the Linux kernel between fork() and swapoff where a partially built mm is exposed, allowing traversal to hit a XA_ZERO_ENTRY and trigger a NULL pointer dereference in unuse_mm(). The public description states the bug arises from a race while duplicating the mm...

CVE-2025-39992: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm: swap: check for stable address space before operating on the VMA It is possible to hit a zero entry while traversing the vmas in unusemm called from swapoff path and accessing it causes the OOPS: Unable to handle kernel NULL...