linux-cve-announce - CVE-2025-68739: PM / devfreq: hisi: Fix potential UAF in OPP handling

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: <2025122414-CVE-2025-68739-b2a7@gregkh>
Date: Wed, 24 Dec 2025 13:10:15 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-68739: PM / devfreq: hisi: Fix potential UAF in OPP handling

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

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

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

PM / devfreq: hisi: Fix potential UAF in OPP handling

Ensure all required data is acquired before calling dev_pm_opp_put(opp)
to maintain correct resource acquisition and release order.

The Linux kernel CVE team has assigned CVE-2025-68739 to this issue.


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

	Issue introduced in 6.17 with commit 7da2fdaaa1e6062686ac96a9f096c2d7847533e4 and fixed in 6.17.13 with commit efb028b07f7b2d141b91c2fab5276b601f0d0dbe
	Issue introduced in 6.17 with commit 7da2fdaaa1e6062686ac96a9f096c2d7847533e4 and fixed in 6.18.2 with commit 469b0b8ce08818f3e4f01d2fa8d0dadeab501e1f
	Issue introduced in 6.17 with commit 7da2fdaaa1e6062686ac96a9f096c2d7847533e4 and fixed in 6.19-rc1 with commit 26dd44a40096468396b6438985d8e44e0743f64c

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-2025-68739
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/devfreq/hisi_uncore_freq.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/efb028b07f7b2d141b91c2fab5276b601f0d0dbe
	https://git.kernel.org/stable/c/469b0b8ce08818f3e4f01d2fa8d0dadeab501e1f
	https://git.kernel.org/stable/c/26dd44a40096468396b6438985d8e44e0743f64c