CVE-2026-19673

The Zephyr RTOS Ethernet L2 layer contains an out-of-bounds read and net_buf length underflow in subsys/net/l2/ethernet/ethernet.c. When parsing a truncated VLAN header (ethertype 0x8100), the ethernet_recv() function fails to re-verify the buffer length when reinterpreting the header as an 18-by...