CVE-2026-53157

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

Description A slab-use-after-free issue exists in the phonet device destroy() function. The function removes a phonet device from the per-net device list using list del rcu() but frees the memory immediately. Because RCU (Read-Copy-Update) readers may still hold a pointer to the object after its removal, accessing that pointer leads to a use-after-free condition. RCU is a synchronization mechanism that allows multiple readers to access data while it is being updated.

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