linux-cve-announce - CVE-2023-53753: drm/amd/display: fix mapping to non-allocated address

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Message-ID: <2025120843-CVE-2023-53753-1a11@gregkh>
Date: Mon,  8 Dec 2025 10:19:52 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53753: drm/amd/display: fix mapping to non-allocated address

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

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

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

drm/amd/display: fix mapping to non-allocated address

[Why]
There is an issue mapping non-allocated location of memory.
It would allocate gpio registers from an array out of bounds.

[How]
Patch correct numbers of bounds for using.

The Linux kernel CVE team has assigned CVE-2023-53753 to this issue.


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

	Fixed in 6.1.16 with commit 8ce8a443ddd9002861a4ee8a7e33a0c02717422f
	Fixed in 6.2.3 with commit 24aaf6603600d6d1159973c809ea2737664b28c4
	Fixed in 6.3 with commit 9190d4a263264eabf715f5fc1827da45e3fdc247

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-2023-53753
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/display/dc/gpio/dcn20/hw_factory_dcn20.c
	drivers/gpu/drm/amd/display/dc/gpio/dcn30/hw_factory_dcn30.c
	drivers/gpu/drm/amd/display/dc/gpio/dcn32/hw_factory_dcn32.c
	drivers/gpu/drm/amd/display/dc/gpio/ddc_regs.h


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/8ce8a443ddd9002861a4ee8a7e33a0c02717422f
	https://git.kernel.org/stable/c/24aaf6603600d6d1159973c809ea2737664b28c4
	https://git.kernel.org/stable/c/9190d4a263264eabf715f5fc1827da45e3fdc247