CVE-2026-68120

A flaw was found in the Linux kernel's rtase driver. This vulnerability occurs because the hardware performs packet parsing before transmission. When processing incomplete IPv4, IPv6, TCP, or UDP headers, or specific UDP packets with insufficient transport data, the hardware parser may expect additional protocol header data that is not present. A remote attacker could exploit this by sending specially crafted network packets, leading to a transmission (TX) hang and causing a Denial of Service (DoS).

This vulnerability poses no security risk to Red Hat Enterprise Linux environments because the rtase driver is not built or shipped with supported kernels. The underlying defect stems from hardware packet parsing quirks on Realtek network controllers that can stall packet transmission upon encountering truncated network frames. Without the driver present in supported Red Hat distributions, network interfaces cannot be driven into a transmission hang via this vector.