linux-cve-announce - CVE-2022-49860: dmaengine: ti: k3-udma-glue: fix memory leak when register device fail

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Message-ID: <2025050147-CVE-2022-49860-75f4@gregkh>
Date: Thu,  1 May 2025 16:10:50 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-49860: dmaengine: ti: k3-udma-glue: fix memory leak when register device fail

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

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

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

dmaengine: ti: k3-udma-glue: fix memory leak when register device fail

If device_register() fails, it should call put_device() to give
up reference, the name allocated in dev_set_name() can be freed
in callback function kobject_cleanup().

The Linux kernel CVE team has assigned CVE-2022-49860 to this issue.


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

	Issue introduced in 5.11 with commit 5b65781d06ea90ef2f8e51a13352c43c3daa8cdc and fixed in 5.15.79 with commit 1dd27541aa2b95bde71bddd43d73f9c16d73272c
	Issue introduced in 5.11 with commit 5b65781d06ea90ef2f8e51a13352c43c3daa8cdc and fixed in 6.0.9 with commit 025eab5189fc7ee223ae9b4bc49d7df196543e53
	Issue introduced in 5.11 with commit 5b65781d06ea90ef2f8e51a13352c43c3daa8cdc and fixed in 6.1 with commit ac2b9f34f02052709aea7b34bb2a165e1853eb41

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-2022-49860
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/dma/ti/k3-udma-glue.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/1dd27541aa2b95bde71bddd43d73f9c16d73272c
	https://git.kernel.org/stable/c/025eab5189fc7ee223ae9b4bc49d7df196543e53
	https://git.kernel.org/stable/c/ac2b9f34f02052709aea7b34bb2a165e1853eb41