CVE-2022-49533 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ath11k: Change max no of active probe SSID and BSSID to fw capability

The maximum number of SSIDs in a for active probe requests is currently reported as 16 (WLAN_SCAN_PARAMS_MAX_SSID) when registering the driver. The scan_req_params structure only has the capacity to hold 10 SSIDs. This leads to a buffer overflow which can be triggered from wpa_supplicant in userspace. When copying the SSIDs into the scan_req_params structure in the ath11k_mac_op_hw_scan route it can overwrite the extraie pointer.

Firmware supports 16 ssid 4 bssid for each ssid 4 bssid combo probe request will be sent so totally 64 probe requests supported. So set both max ssid and bssid to 16 and 4 respectively. Remove the redundant macros of ssid and bssid.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01300-QCAHKSWPL_SILICONZ-1

Reference

https://git.kernel.org/stable/c/210505788f1d243232e21ef660efcd4838890ce8 https://git.kernel.org/stable/c/50dc9ce9f80554a88e33b73c30851acf2be36ed3 https://git.kernel.org/stable/c/ec5dfa1d66f2f71a48dab027d26a9fa78eb0f58f