linux-cve-announce - CVE-2025-38292: wifi: ath12k: fix invalid access to memory

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Message-ID: <2025071011-CVE-2025-38292-e03a@gregkh>
Date: Thu, 10 Jul 2025 09:42:33 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38292: wifi: ath12k: fix invalid access to memory

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

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

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

wifi: ath12k: fix invalid access to memory

In ath12k_dp_rx_msdu_coalesce(), rxcb is fetched from skb and boolean
is_continuation is part of rxcb.
Currently, after freeing the skb, the rxcb->is_continuation accessed
again which is wrong since the memory is already freed.
This might lead use-after-free error.

Hence, fix by locally defining bool is_continuation from rxcb,
so that after freeing skb, is_continuation can be used.

Compile tested only.

The Linux kernel CVE team has assigned CVE-2025-38292 to this issue.


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

	Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.12.34 with commit 371b340affa52f280f6eadfd25fbd43f09f0d5c0
	Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.15.3 with commit 5f09d16cd57764c95c8548fe5b70672c9ac01127
	Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.16-rc1 with commit 9f17747fbda6fca934854463873c4abf8061491d

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-2025-38292
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/371b340affa52f280f6eadfd25fbd43f09f0d5c0
	https://git.kernel.org/stable/c/5f09d16cd57764c95c8548fe5b70672c9ac01127
	https://git.kernel.org/stable/c/9f17747fbda6fca934854463873c4abf8061491d