CVE-2026-46173

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

Description An issue exists where an exiting task that experiences an oops (a kernel panic that does not require a full system reboot) can be preempted during the execution of do task dead(). This occurs because make task dead() calls do task dead() with preemption enabled, violating the requirement that schedule() must be called with preemption disabled. If a task is preempted after becoming TASK DEAD but before entering the scheduler, the system may repeatedly drop references to the task stack. This leads to memory corruption, specifically use-after-free or double-free conditions, potentially allowing two tasks to run on the same stack.

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