CVE-2026-68282: drm/rockchip: analogix_dp: Add missing error check for platform_get_resource()

CVE-2026-68282: drm/rockchip: analogix_dp: Add missing error check for platform_get_resource()

[Greg Kroah-Hartman]

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

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

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

drm/rockchip: analogix_dp: Add missing error check for platform_get_resource()

Add missing error check for platform_get_resource() return value to
prevent NULL pointer dereference when memory resource is not available.

The Linux kernel CVE team has assigned CVE-2026-68282 to this issue.


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

	Issue introduced in 6.15 with commit 718b3bb9c0ab87bc90914799e6999bf4b1ecc67b and fixed in 6.18.42 with commit 6ab29a86835721566f0c26bd7bebcdcdcb0cb093
	Issue introduced in 6.15 with commit 718b3bb9c0ab87bc90914799e6999bf4b1ecc67b and fixed in 7.1.6 with commit ba34d197ebf2552cf10d279e076c58a22c9ecf73
	Issue introduced in 6.15 with commit 718b3bb9c0ab87bc90914799e6999bf4b1ecc67b and fixed in 7.2-rc1 with commit 45895f4d4d5f222d07412f90664f88b059627859

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-2026-68282
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/rockchip/analogix_dp-rockchip.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/6ab29a86835721566f0c26bd7bebcdcdcb0cb093
	https://git.kernel.org/stable/c/ba34d197ebf2552cf10d279e076c58a22c9ecf73
	https://git.kernel.org/stable/c/45895f4d4d5f222d07412f90664f88b059627859