CVE-2026-45866

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

Description A use-after-free issue exists in the caif serial component of the Linux kernel. A race condition occurs between the ldisc close() function and packet transmission. Specifically, ldisc close() calls tty kref put() while the network device is still active and capable of receiving packets. This allows the handle tx() function to access the ser->tty variable after the tty object has been freed, leading to a memory corruption when calling tty->ops->write().

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