linux-cve-announce - CVE-2025-38390: firmware: arm_ffa: Fix memory leak by freeing notifier callback node

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: <2025072508-CVE-2025-38390-7d67@gregkh>
Date: Fri, 25 Jul 2025 14:55:21 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38390: firmware: arm_ffa: Fix memory leak by freeing notifier callback node

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

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

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

firmware: arm_ffa: Fix memory leak by freeing notifier callback node

Commit e0573444edbf ("firmware: arm_ffa: Add interfaces to request
notification callbacks") adds support for notifier callbacks by allocating
and inserting a callback node into a hashtable during registration of
notifiers. However, during unregistration, the code only removes the
node from the hashtable without freeing the associated memory, resulting
in a memory leak.

Resolve the memory leak issue by ensuring the allocated notifier callback
node is properly freed after it is removed from the hashtable entry.

The Linux kernel CVE team has assigned CVE-2025-38390 to this issue.


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

	Issue introduced in 6.7 with commit e0573444edbf4ee7e3c191d3d08a4ccbd26628be and fixed in 6.12.37 with commit 076fa20b4f5737c34921dbb152f9efceaee571b2
	Issue introduced in 6.7 with commit e0573444edbf4ee7e3c191d3d08a4ccbd26628be and fixed in 6.15.6 with commit 938827c440564b2cf2f9b804d1fe81ce8267eded
	Issue introduced in 6.7 with commit e0573444edbf4ee7e3c191d3d08a4ccbd26628be and fixed in 6.16-rc5 with commit a833d31ad867103ba72a0b73f3606f4ab8601719

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-2025-38390
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/firmware/arm_ffa/driver.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/076fa20b4f5737c34921dbb152f9efceaee571b2
	https://git.kernel.org/stable/c/938827c440564b2cf2f9b804d1fe81ce8267eded
	https://git.kernel.org/stable/c/a833d31ad867103ba72a0b73f3606f4ab8601719