CVE-2026-46259

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

Description A flaw exists in the procfs component of the Linux kernel within the do task stat() function. When reading the '/proc/[pid]/stat' endpoint, the system accesses the real parent variable without adequate Read-Copy Update (RCU) protection. RCU is a synchronization mechanism that allows multiple readers to access data while it is being updated. This lack of protection can lead to a Use-After-Free (UAF) condition, which occurs when a program continues to use a pointer after the memory it points to has been freed, potentially causing system instability or crashes.

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