CVE-2022-50559: clk: imx: scu: fix memleak on platform_device_add() fails

CVE-2022-50559: clk: imx: scu: fix memleak on platform_device_add() fails

[Greg Kroah-Hartman]

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

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

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

clk: imx: scu: fix memleak on platform_device_add() fails

No error handling is performed when platform_device_add()
fails. Add error processing before return, and modified
the return value.

The Linux kernel CVE team has assigned CVE-2022-50559 to this issue.


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

	Issue introduced in 5.11 with commit 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 and fixed in 5.15.75 with commit 9209e6bab75d4008d9f4248c66008f3ffd24c931
	Issue introduced in 5.11 with commit 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 and fixed in 5.19.17 with commit 43c589b7a187ef481b594317eaab8c8f269e4a68
	Issue introduced in 5.11 with commit 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 and fixed in 6.0.3 with commit 05fe0b3d69b8e094db207648ab21cade56d71cd8
	Issue introduced in 5.11 with commit 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 and fixed in 6.1 with commit 855ae87a2073ebf1b395e020de54fdf9ce7d166f

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-2022-50559
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/clk/imx/clk-scu.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/9209e6bab75d4008d9f4248c66008f3ffd24c931
	https://git.kernel.org/stable/c/43c589b7a187ef481b594317eaab8c8f269e4a68
	https://git.kernel.org/stable/c/05fe0b3d69b8e094db207648ab21cade56d71cd8
	https://git.kernel.org/stable/c/855ae87a2073ebf1b395e020de54fdf9ce7d166f