CVE-2026-43458

A flaw was found in the Linux kernel, specifically within the `caif_serial` line discipline. This vulnerability, a use-after-free, occurs due to improper management of the `tty->link` reference during the `ldisc_open` and `ser_release` functions. A local attacker could exploit this by triggering the `caif_serial` transmit path, which may lead to a system crash, resulting in a Denial of Service (DoS), or potentially allow for privilege escalation.