linux-cve-announce - CVE-2022-50429: memory: of: Fix refcount leak bug in of_lpddr3_get_ddr

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Message-ID: <2025100157-CVE-2022-50429-4bc6@gregkh>
Date: Wed,  1 Oct 2025 13:42:02 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50429: memory: of: Fix refcount leak bug in of_lpddr3_get_ddr_timings()

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

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

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

memory: of: Fix refcount leak bug in of_lpddr3_get_ddr_timings()

We should add the of_node_put() when breaking out of
for_each_child_of_node() as it will automatically increase
and decrease the refcount.

The Linux kernel CVE team has assigned CVE-2022-50429 to this issue.


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

	Issue introduced in 5.5 with commit 976897dd96db94c74209d0a0671d7a73aa02fab9 and fixed in 5.10.150 with commit 1d312c12c91f831fcc48623c921f2d4560edb159
	Issue introduced in 5.5 with commit 976897dd96db94c74209d0a0671d7a73aa02fab9 and fixed in 5.15.75 with commit 7e053784c4c70df28324106d476778be7a4519b3
	Issue introduced in 5.5 with commit 976897dd96db94c74209d0a0671d7a73aa02fab9 and fixed in 5.19.17 with commit daab421fc2dc7d6ae7eb20a3f565ae09652c68b9
	Issue introduced in 5.5 with commit 976897dd96db94c74209d0a0671d7a73aa02fab9 and fixed in 6.0.3 with commit 3b321bf7687968a090cf6b62bd8e67d692f59a16
	Issue introduced in 5.5 with commit 976897dd96db94c74209d0a0671d7a73aa02fab9 and fixed in 6.1 with commit 48af14fb0eaa63d9aa68f59fb0b205ec55a95636

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-2022-50429
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/memory/of_memory.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/1d312c12c91f831fcc48623c921f2d4560edb159
	https://git.kernel.org/stable/c/7e053784c4c70df28324106d476778be7a4519b3
	https://git.kernel.org/stable/c/daab421fc2dc7d6ae7eb20a3f565ae09652c68b9
	https://git.kernel.org/stable/c/3b321bf7687968a090cf6b62bd8e67d692f59a16
	https://git.kernel.org/stable/c/48af14fb0eaa63d9aa68f59fb0b205ec55a95636