CVE-2026-43216

A flaw was found in the Linux kernel's networking subsystem. Specifically, the skb_may_tx_timestamp() function can attempt to acquire a lock in an Interrupt Request (IRQ) context, which is an inappropriate execution environment for this operation. This can occur when certain network drivers process transmit timestamps from a dedicated interrupt handler. If the lock is already held by another process on the same CPU, this can lead to a system deadlock, resulting in a Denial of Service (DoS) for the affected system.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.