linux-cve-announce - CVE-2025-37783: drm/msm/dpu: Fix error pointers in dpu_plane_virtual_atomic

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Message-ID: <2025050117-CVE-2025-37783-23bf@gregkh>
Date: Thu,  1 May 2025 15:07:31 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37783: drm/msm/dpu: Fix error pointers in dpu_plane_virtual_atomic_check

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

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

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

drm/msm/dpu: Fix error pointers in dpu_plane_virtual_atomic_check

The function dpu_plane_virtual_atomic_check was dereferencing pointers
returned by drm_atomic_get_plane_state without checking for errors. This
could lead to undefined behavior if the function returns an error pointer.

This commit adds checks using IS_ERR to ensure that plane_state is
valid before dereferencing them.

Similar to commit da29abe71e16
("drm/amd/display: Fix error pointers in amdgpu_dm_crtc_mem_type_changed").

Patchwork: https://patchwork.freedesktop.org/patch/643132/

The Linux kernel CVE team has assigned CVE-2025-37783 to this issue.


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

	Issue introduced in 6.14 with commit 774bcfb731765d092992136b54c34958d7c64bea and fixed in 6.14.4 with commit a9670ed1cce3216778c89936d3ae91cf0d436035
	Issue introduced in 6.14 with commit 774bcfb731765d092992136b54c34958d7c64bea and fixed in 6.15-rc3 with commit 5cb1b130e1cd04239cc9c26a98279f4660dce583

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-2025-37783
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/msm/disp/dpu1/dpu_plane.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/a9670ed1cce3216778c89936d3ae91cf0d436035
	https://git.kernel.org/stable/c/5cb1b130e1cd04239cc9c26a98279f4660dce583