linux-cve-announce - CVE-2022-50539: ARM: OMAP2+: omap4-common: Fix refcount leak bug

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Message-ID: <2025100755-CVE-2022-50539-4f53@gregkh>
Date: Tue,  7 Oct 2025 17:20:57 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50539: ARM: OMAP2+: omap4-common: Fix refcount leak bug

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

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

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

ARM: OMAP2+: omap4-common: Fix refcount leak bug

In omap4_sram_init(), of_find_compatible_node() will return a node
pointer with refcount incremented. We should use of_node_put() when
it is not used anymore.

The Linux kernel CVE team has assigned CVE-2022-50539 to this issue.


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

	Fixed in 6.1.16 with commit 1d9452ae3bdb830f9309cf10a2f65977999cb14e
	Fixed in 6.2.3 with commit 049875b76660bbdc4873a915afb294f954eb7320
	Fixed in 6.3 with commit 7c32919a378782c95c72bc028b5c30dfe8c11f82

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-2022-50539
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:
	arch/arm/mach-omap2/omap4-common.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/1d9452ae3bdb830f9309cf10a2f65977999cb14e
	https://git.kernel.org/stable/c/049875b76660bbdc4873a915afb294f954eb7320
	https://git.kernel.org/stable/c/7c32919a378782c95c72bc028b5c30dfe8c11f82