linux-cve-announce - CVE-2025-38600: wifi: mt76: mt7925: fix off by one in mt7925_mcu_hw

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Message-ID: <2025081920-CVE-2025-38600-dddc@gregkh>
Date: Tue, 19 Aug 2025 19:18:46 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38600: wifi: mt76: mt7925: fix off by one in mt7925_mcu_hw_scan()

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

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

wifi: mt76: mt7925: fix off by one in mt7925_mcu_hw_scan()

The ssid->ssids[] and sreq->ssids[] arrays have MT7925_RNR_SCAN_MAX_BSSIDS
elements so this >= needs to be > to prevent an out of bounds access.

The Linux kernel CVE team has assigned CVE-2025-38600 to this issue.


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

	Issue introduced in 6.16 with commit 8284815ca161e0fa0861cc4085f1c0141e10a34d and fixed in 6.16.1 with commit 4d80d4fa986c5da99042b66bf30a028e7f564156
	Issue introduced in 6.16 with commit 8284815ca161e0fa0861cc4085f1c0141e10a34d and fixed in 6.17-rc1 with commit b3a431fe2e399b2e0cc5f43f7e9d63d63d3710ee

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-2025-38600
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/mediatek/mt76/mt7925/mcu.c


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/4d80d4fa986c5da99042b66bf30a028e7f564156
	https://git.kernel.org/stable/c/b3a431fe2e399b2e0cc5f43f7e9d63d63d3710ee