linux-cve-announce - CVE-2025-71189: dmaengine: dw: dmamux: fix OF node leak on route allocation failure

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2026013118-CVE-2025-71189-9b0f@gregkh>
Date: Sat, 31 Jan 2026 12:44:22 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-71189: dmaengine: dw: dmamux: fix OF node leak on route allocation failure

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

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

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

dmaengine: dw: dmamux: fix OF node leak on route allocation failure

Make sure to drop the reference taken to the DMA master OF node also on
late route allocation failures.

The Linux kernel CVE team has assigned CVE-2025-71189 to this issue.


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

	Issue introduced in 5.19 with commit 134d9c52fca26d2d199516e915da00f0cc6adc73 and fixed in 6.6.122 with commit db7c79c1bbfb1b0184e78a17ac2bd0f2bc3134d1
	Issue introduced in 5.19 with commit 134d9c52fca26d2d199516e915da00f0cc6adc73 and fixed in 6.12.67 with commit 8f7a391211381ed2f6802032c78c7820d166bc49
	Issue introduced in 5.19 with commit 134d9c52fca26d2d199516e915da00f0cc6adc73 and fixed in 6.18.7 with commit eabe40f8a53c29f531e92778ea243e379f4f7978
	Issue introduced in 5.19 with commit 134d9c52fca26d2d199516e915da00f0cc6adc73 and fixed in 6.19-rc6 with commit ec25e60f9f95464aa11411db31d0906b3fb7b9f2

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-2025-71189
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/dw/rzn1-dmamux.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/db7c79c1bbfb1b0184e78a17ac2bd0f2bc3134d1
	https://git.kernel.org/stable/c/8f7a391211381ed2f6802032c78c7820d166bc49
	https://git.kernel.org/stable/c/eabe40f8a53c29f531e92778ea243e379f4f7978
	https://git.kernel.org/stable/c/ec25e60f9f95464aa11411db31d0906b3fb7b9f2