linux-cve-announce - CVE-2025-37769: drm/amd/pm/smu11: Prevent division by zero

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Message-ID: <2025050113-CVE-2025-37769-dd42@gregkh>
Date: Thu,  1 May 2025 15:07:17 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37769: drm/amd/pm/smu11: 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/smu11: 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.

(cherry picked from commit da7dc714a8f8e1c9fc33c57cd63583779a3bef71)

The Linux kernel CVE team has assigned CVE-2025-37769 to this issue.


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

	Issue introduced in 6.0 with commit 1e866f1fe528bc0158cdcd589053753032bdb52c and fixed in 6.1.135 with commit de6f8e0534cfabc528c969d453150ca90b24fb01
	Issue introduced in 6.0 with commit 1e866f1fe528bc0158cdcd589053753032bdb52c and fixed in 6.6.88 with commit de2cba068c9c648503973b57696d035cfe58a9f6
	Issue introduced in 6.0 with commit 1e866f1fe528bc0158cdcd589053753032bdb52c and fixed in 6.12.25 with commit 63a150400194592206817124268ff6f43947e8c9
	Issue introduced in 6.0 with commit 1e866f1fe528bc0158cdcd589053753032bdb52c and fixed in 6.14.4 with commit fc9d55377353321e78f9e108d15f72a17e8c6ee2
	Issue introduced in 6.0 with commit 1e866f1fe528bc0158cdcd589053753032bdb52c and fixed in 6.15-rc2 with commit 7ba88b5cccc1a99c1afb96e31e7eedac9907704c

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-2025-37769
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/smu11/smu_v11_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/de6f8e0534cfabc528c969d453150ca90b24fb01
	https://git.kernel.org/stable/c/de2cba068c9c648503973b57696d035cfe58a9f6
	https://git.kernel.org/stable/c/63a150400194592206817124268ff6f43947e8c9
	https://git.kernel.org/stable/c/fc9d55377353321e78f9e108d15f72a17e8c6ee2
	https://git.kernel.org/stable/c/7ba88b5cccc1a99c1afb96e31e7eedac9907704c