CVE-2025-68380

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

wifi: ath11k: fix peer HE MCS assignment

In ath11k_wmi_send_peer_assoc_cmd(), peers transmit MCS is sent to firmware as receive MCS while peers receive MCS sent as transmit MCS, which goes against firmwires definition.

While connecting to a misbehaved AP that advertises 0xffff (meaning not supported) for 160 MHz transmit MCS map, firmware crashes due to 0xffff is assigned to he_mcs->rx_mcs_set field.

Ext Tag: HE Capabilities
    [...]
    Supported HE-MCS and NSS Set
	[...]
        Rx and Tx MCS Maps 160 MHz
	    [...]
            Tx HE-MCS Map 160 MHz: 0xffff

Swap the assignment to fix this issue.

As the HE rate control mask is meant to limit our own transmit MCS, it needs to go via he_mcs->rx_mcs_set field. With the aforementioned swapping done, change is needed as well to apply it to the peers receive MCS.

Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.41 Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Affected Software

References

• https://git.kernel.org/stable/c/097c870b91817779e5a312c6539099a884b1fe2b
• https://git.kernel.org/stable/c/381096a417b7019896e93e86f4c585c592bf98e2
• https://git.kernel.org/stable/c/4a013ca2d490c73c40588d62712ffaa432046a04
• https://git.kernel.org/stable/c/6b1a0da75932353f66e710976ca85a7131f647ff