CVE-2026-43458
Description
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.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
An adversary that can cause a resource counter to become inaccurate may be able to create situations where resources are not accounted for and not released, thus causing resources to become scarce for future needs.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An adversary that can cause a resource counter to become inaccurate may be able to force an error that causes the product to crash or exit out of its current operation.
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