CVE-2026-63950 mm/rmap: initialize nr_pages to 1 at loop start in try_to_unmap_one

In the Linux kernel, the following vulnerability has been resolved: mm/rmap: initialize nrpages to 1 at loop start in trytounmapone Initialize nrpages to 1 at the start of each loop iteration, like folioreferencedone does. Without this, nrpages computed by a previous foliounmapptebatch call can b...

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 a migration operation competing with a fallocating hole that could cause folio to remain mapped without bein...