linux-cve-announce - CVE-2022-50325: ASoC: Intel: avs: Fix potential RX buffer overflow

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Message-ID: <2025091554-CVE-2022-50325-d6bb@gregkh>
Date: Mon, 15 Sep 2025 16:49:02 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50325: ASoC: Intel: avs: Fix potential RX buffer overflow

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

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

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

ASoC: Intel: avs: Fix potential RX buffer overflow

If an event caused firmware to return invalid RX size for
LARGE_CONFIG_GET, memcpy_fromio() could end up copying too many bytes.
Fix by utilizing min_t().

The Linux kernel CVE team has assigned CVE-2022-50325 to this issue.


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

	Issue introduced in 5.18 with commit f14a1c5a9f830025dc8638303ddefd5f731ae4bc and fixed in 6.0.16 with commit ec1f0c12cb2e614c3fa8e9402f7ffcf82166078a
	Issue introduced in 5.18 with commit f14a1c5a9f830025dc8638303ddefd5f731ae4bc and fixed in 6.1.2 with commit 0bad12fee5ae16ab439d97c66c4238f5f4cc7f68
	Issue introduced in 5.18 with commit f14a1c5a9f830025dc8638303ddefd5f731ae4bc and fixed in 6.2 with commit 23ae34e033b2c0e5e88237af82b163b296fd6aa9

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-2022-50325
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:
	sound/soc/intel/avs/ipc.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/ec1f0c12cb2e614c3fa8e9402f7ffcf82166078a
	https://git.kernel.org/stable/c/0bad12fee5ae16ab439d97c66c4238f5f4cc7f68
	https://git.kernel.org/stable/c/23ae34e033b2c0e5e88237af82b163b296fd6aa9