CVE-2025-21897

CVE-2025-21897: Linux kernel sched_ext vulnerability where pick_task_scx() could return non-queued tasks if balance() wasn’t called. The fix adds a workaround to emulate SCX_RQ_BAL_KEEP only when preceding balance_scx() is missing, and corrects the prior test that used @prev to decide if a task w...

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 an issue with picktaskscx selecting non-queued tasks without balance...

PT-2025-14278 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability in the Linux kernel has been resolved, related to the pick task scx function picking non-queued tasks when called without balance. The issue arises from a fair class bu...