CVE-2022-49533

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

State
Published
Severity
7.8 High
Published
Feb 26, 2025
Updated
Aug 5, 2026
Reserved
Feb 26, 2025

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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

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d5c65159f2895379e11ca13f62feabe93278985d to before 210505788f1d243232e21ef660efcd4838890ce8Affected
  • d5c65159f2895379e11ca13f62feabe93278985d to before ec5dfa1d66f2f71a48dab027d26a9fa78eb0f58fAffected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 50dc9ce9f80554a88e33b73c30851acf2be36ed3Affected
LinuxLinux
  • 5.6Affected
  • before 5.6Not affected
  • 5.17.14 through 5.17.*Not affected
  • 5.18.3 through 5.18.*Not affected
  • 5.19 and laterNot affected

References

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