CVE-2025-37943 is a high-severity vulnerability in the Linux kernel's ath12k Wi-Fi driver. It involves invalid data access in the ath12k_dp_rx_h_undecap_nwifi function when processing packets with lengths exceeding the maximum native Wi-Fi header length. This flaw can lead to memory corruption. A sanity check was added to prevent this invalid access. The issue was tested on specific Qualcomm hardware.