CVE-2023-54147: media: platform: mtk-mdp3: Add missing check and free for ida_alloc

CVE-2023-54147: media: platform: mtk-mdp3: Add missing check and free for ida_alloc

[Greg Kroah-Hartman]

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

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

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

media: platform: mtk-mdp3: Add missing check and free for ida_alloc

Add the check for the return value of the ida_alloc in order to avoid
NULL pointer dereference.
Moreover, free allocated "ctx->id" if mdp_m2m_open fails later in order
to avoid memory leak.

The Linux kernel CVE team has assigned CVE-2023-54147 to this issue.


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

	Issue introduced in 6.1 with commit 61890ccaefaff89f5babd2c8412fd222c3f5fe38 and fixed in 6.1.28 with commit 51fc1880e47421ee7b192372e8e86b7bbba40776
	Issue introduced in 6.1 with commit 61890ccaefaff89f5babd2c8412fd222c3f5fe38 and fixed in 6.2.15 with commit 4c173a65a2b1cc0556c3f6f0bab82e4fdb449522
	Issue introduced in 6.1 with commit 61890ccaefaff89f5babd2c8412fd222c3f5fe38 and fixed in 6.3.2 with commit 22b72cad501fb75500cc60af4d92de3066fb6fc2
	Issue introduced in 6.1 with commit 61890ccaefaff89f5babd2c8412fd222c3f5fe38 and fixed in 6.4 with commit d00f592250782538cda87745607695b0fe27dcd4

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-2023-54147
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/media/platform/mediatek/mdp3/mtk-mdp3-m2m.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/51fc1880e47421ee7b192372e8e86b7bbba40776
	https://git.kernel.org/stable/c/4c173a65a2b1cc0556c3f6f0bab82e4fdb449522
	https://git.kernel.org/stable/c/22b72cad501fb75500cc60af4d92de3066fb6fc2
	https://git.kernel.org/stable/c/d00f592250782538cda87745607695b0fe27dcd4