linux-cve-announce - CVE-2025-71190: dmaengine: bcm-sba-raid: fix device leak on probe

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Message-ID: <2026013119-CVE-2025-71190-43b2@gregkh>
Date: Sat, 31 Jan 2026 12:44:23 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-71190: dmaengine: bcm-sba-raid: fix device leak on probe

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

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

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

dmaengine: bcm-sba-raid: fix device leak on probe

Make sure to drop the reference taken when looking up the mailbox device
during probe on probe failures and on driver unbind.

The Linux kernel CVE team has assigned CVE-2025-71190 to this issue.


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

	Issue introduced in 4.13 with commit 743e1c8ffe4ee5dd7596556dcc3f022ccde13d7b and fixed in 6.6.122 with commit c80ca7bdff158401440741bdcf9175bd8608580b
	Issue introduced in 4.13 with commit 743e1c8ffe4ee5dd7596556dcc3f022ccde13d7b and fixed in 6.12.67 with commit db6f1d6d31711e73e6a214c73e6a8fb4cda0483d
	Issue introduced in 4.13 with commit 743e1c8ffe4ee5dd7596556dcc3f022ccde13d7b and fixed in 6.18.7 with commit 2ed1a9de1f2d727ccae5bc9cc7c63ee3519c0c8b
	Issue introduced in 4.13 with commit 743e1c8ffe4ee5dd7596556dcc3f022ccde13d7b and fixed in 6.19-rc6 with commit 7c3a46ebf15a9796b763a54272407fdbf945bed8

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-2025-71190
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/bcm-sba-raid.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/c80ca7bdff158401440741bdcf9175bd8608580b
	https://git.kernel.org/stable/c/db6f1d6d31711e73e6a214c73e6a8fb4cda0483d
	https://git.kernel.org/stable/c/2ed1a9de1f2d727ccae5bc9cc7c63ee3519c0c8b
	https://git.kernel.org/stable/c/7c3a46ebf15a9796b763a54272407fdbf945bed8