linux-cve-announce - CVE-2022-49533: ath11k: Change max no of active probe SSID and BSSID to fw capability

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Message-ID: <2025022613-CVE-2022-49533-a0a4@gregkh>
Date: Wed, 26 Feb 2025 03:13:27 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49533: ath11k: Change max no of active probe SSID and BSSID to fw capability

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

The Linux kernel CVE team has assigned CVE-2022-49533 to this issue.

Affected and fixed versions
===========================

	Fixed in 5.17.14 with commit 210505788f1d243232e21ef660efcd4838890ce8
	Fixed in 5.18.3 with commit ec5dfa1d66f2f71a48dab027d26a9fa78eb0f58f
	Fixed in 5.19 with commit 50dc9ce9f80554a88e33b73c30851acf2be36ed3

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2022-49533
will be updated if fixes are backported, please check that for the most
up to date information about this issue.

Affected files
==============

The file(s) affected by this issue are:
	drivers/net/wireless/ath/ath11k/wmi.h

Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/210505788f1d243232e21ef660efcd4838890ce8
	https://git.kernel.org/stable/c/ec5dfa1d66f2f71a48dab027d26a9fa78eb0f58f
	https://git.kernel.org/stable/c/50dc9ce9f80554a88e33b73c30851acf2be36ed3