linux-cve-announce - CVE-2025-38137: PCI/pwrctrl: Cancel outstanding rescan work when unregistering

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: <2025070332-CVE-2025-38137-d4bf@gregkh>
Date: Thu,  3 Jul 2025 10:35:54 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38137: PCI/pwrctrl: Cancel outstanding rescan work when unregistering

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

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

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

PCI/pwrctrl: Cancel outstanding rescan work when unregistering

It's possible to trigger use-after-free here by:

  (a) forcing rescan_work_func() to take a long time and
  (b) utilizing a pwrctrl driver that may be unloaded for some reason

Cancel outstanding work to ensure it is finished before we allow our data
structures to be cleaned up.

[bhelgaas: tidy commit log]

The Linux kernel CVE team has assigned CVE-2025-38137 to this issue.


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

	Issue introduced in 6.11 with commit 8f62819aaace77dd85037ae766eb767f8c4417ce and fixed in 6.15.3 with commit b3ad6d23fec23fbef382ce9ea640c37446593cf5
	Issue introduced in 6.11 with commit 8f62819aaace77dd85037ae766eb767f8c4417ce and fixed in 6.16-rc1 with commit 8b926f237743f020518162c62b93cb7107a2b5eb

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-2025-38137
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/pci/pwrctrl/core.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/b3ad6d23fec23fbef382ce9ea640c37446593cf5
	https://git.kernel.org/stable/c/8b926f237743f020518162c62b93cb7107a2b5eb