linux-cve-announce - CVE-2025-37943: wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap

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Message-ID: <2025052043-CVE-2025-37943-9cf8@gregkh>
Date: Tue, 20 May 2025 17:58:32 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37943: wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi

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

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

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

wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi

In certain cases, hardware might provide packets with a
length greater than the maximum native Wi-Fi header length.
This can lead to accessing and modifying fields in the header
within the ath12k_dp_rx_h_undecap_nwifi function for
DP_RX_DECAP_TYPE_NATIVE_WIFI decap type and
potentially resulting in invalid data access and memory corruption.

Add a sanity check before processing the SKB to prevent invalid
data access in the undecap native Wi-Fi function for the
DP_RX_DECAP_TYPE_NATIVE_WIFI decap type.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1

The Linux kernel CVE team has assigned CVE-2025-37943 to this issue.


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

	Fixed in 6.6.88 with commit 7f1d986da5c6abb75ffe4d0d325fc9b341c41a1c
	Fixed in 6.12.24 with commit 3abe15e756481c45f6acba3d476cb3ca4afc3b61
	Fixed in 6.13.12 with commit 6ee653194ddb83674913fd2727b8ecfae0597ade
	Fixed in 6.14.3 with commit 50be1fb76556e80af9f5da80f28168b6c71bce58
	Fixed in 6.15-rc1 with commit 9a0dddfb30f120db3851627935851d262e4e7acb

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-2025-37943
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/ath12k/dp_rx.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/7f1d986da5c6abb75ffe4d0d325fc9b341c41a1c
	https://git.kernel.org/stable/c/3abe15e756481c45f6acba3d476cb3ca4afc3b61
	https://git.kernel.org/stable/c/6ee653194ddb83674913fd2727b8ecfae0597ade
	https://git.kernel.org/stable/c/50be1fb76556e80af9f5da80f28168b6c71bce58
	https://git.kernel.org/stable/c/9a0dddfb30f120db3851627935851d262e4e7acb