linux-cve-announce - CVE-2025-37767: drm/amd/pm: Prevent division by zero

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Message-ID: <2025050112-CVE-2025-37767-4e19@gregkh>
Date: Thu,  1 May 2025 15:07:15 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37767: drm/amd/pm: Prevent division by zero

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

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

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

drm/amd/pm: Prevent division by zero

The user can set any speed value.
If speed is greater than UINT_MAX/8, division by zero is possible.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

The Linux kernel CVE team has assigned CVE-2025-37767 to this issue.


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

	Issue introduced in 5.13 with commit c05d1c401572ac63d704183b19db2ce746961412 and fixed in 6.1.135 with commit 8f7b5987e21e003cafac28f0e4d323e6496f83ba
	Issue introduced in 5.13 with commit c05d1c401572ac63d704183b19db2ce746961412 and fixed in 6.6.88 with commit c3ff73e3bddf1a6c30d7effe4018d12ba0cadd2e
	Issue introduced in 5.13 with commit c05d1c401572ac63d704183b19db2ce746961412 and fixed in 6.12.25 with commit fb803d4bb9ea0a61c21c4987505e4d4ae18f9fdc
	Issue introduced in 5.13 with commit c05d1c401572ac63d704183b19db2ce746961412 and fixed in 6.14.4 with commit 327107bd7f052f4ee2d0c966c7ae879822f1814f
	Issue introduced in 5.13 with commit c05d1c401572ac63d704183b19db2ce746961412 and fixed in 6.15-rc1 with commit f23e9116ebb71b63fe9cec0dcac792aa9af30b0c

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-2025-37767
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/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.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/8f7b5987e21e003cafac28f0e4d323e6496f83ba
	https://git.kernel.org/stable/c/c3ff73e3bddf1a6c30d7effe4018d12ba0cadd2e
	https://git.kernel.org/stable/c/fb803d4bb9ea0a61c21c4987505e4d4ae18f9fdc
	https://git.kernel.org/stable/c/327107bd7f052f4ee2d0c966c7ae879822f1814f
	https://git.kernel.org/stable/c/f23e9116ebb71b63fe9cec0dcac792aa9af30b0c