Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi

In certain cases, hardware might provide packets with a
length greater than the maximum native Wi-Fi header length.
This can lead to accessing and modifying fields in the header
within the ath12k_dp_rx_h_undecap_nwifi function for
DP_RX_DECAP_TYPE_NATIVE_WIFI decap type and
potentially resulting in invalid data access and memory corruption.

Add a sanity check before processing the SKB to prevent invalid
data access in the undecap native Wi-Fi function for the
DP_RX_DECAP_TYPE_NATIVE_WIFI decap type.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1

Classification

CVE ID: CVE-2025-37943

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 4.72% (scored less or equal to compared to others)

EPSS Date: 2025-06-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-37943
https://git.kernel.org/stable/c/7f1d986da5c6abb75ffe4d0d325fc9b341c41a1c
https://git.kernel.org/stable/c/3abe15e756481c45f6acba3d476cb3ca4afc3b61
https://git.kernel.org/stable/c/6ee653194ddb83674913fd2727b8ecfae0597ade
https://git.kernel.org/stable/c/50be1fb76556e80af9f5da80f28168b6c71bce58
https://git.kernel.org/stable/c/9a0dddfb30f120db3851627935851d262e4e7acb

Timeline