kernel: ksm: use range-walk function to jump over holes in scan_get_next_rmap_item

A resource exhaustion vulnerability was found in the Kernel Same-page Merging KSM subsystem of the Linux kernel. When scanning processes with large sparse virtual memory mappings e.g., 32 TiB with one mapped page, ksmd inefficiently walks every address rather than skipping unmapped holes. This...

CVE-2025-40040

In the Linux kernel, the following vulnerability has been resolved: mm/ksm: fix flag-dropping behavior in ksmmadvise syzkaller discovered the following crash: kernel BUG 44.607039 ------------ cut here ------------ 44.607422 kernel BUG at mm/userfaultfd.c:2067! 44.608148 Oops: invalid opcode: 000...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from calling khugepaged, ksm in the wrong context...

[SECURITY] Fedora 31 Update: kata-ksm-throttler-1.11.1-1.fc31.1

This project implements a Kernel Same-page Merging throttling daemon. The Kata Containers runtime creates a virtual machine VM to isolate a set of container workloads. The VM requires a guest kernel and a guest operating system "guest OS" to boot and create containers inside the guest environment...