linux-cve-announce - CVE-2025-68804: platform/chrome: cros_ec

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Message-ID: <2026011309-CVE-2025-68804-f10e@gregkh>
Date: Tue, 13 Jan 2026 16:29:30 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-68804: platform/chrome: cros_ec_ishtp: Fix UAF after unbinding driver

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

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

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

platform/chrome: cros_ec_ishtp: Fix UAF after unbinding driver

After unbinding the driver, another kthread `cros_ec_console_log_work`
is still accessing the device, resulting an UAF and crash.

The driver doesn't unregister the EC device in .remove() which should
shutdown sub-devices synchronously.  Fix it.

The Linux kernel CVE team has assigned CVE-2025-68804 to this issue.


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

	Issue introduced in 5.3 with commit 26a14267aff218c60b89007fdb44ca392ba6122c and fixed in 6.1.160 with commit 8dc1f5a85286290dbf04dd5951d020570f49779b
	Issue introduced in 5.3 with commit 26a14267aff218c60b89007fdb44ca392ba6122c and fixed in 6.6.120 with commit 393b8f9bedc7806acb9c47cefdbdb223b4b6164b
	Issue introduced in 5.3 with commit 26a14267aff218c60b89007fdb44ca392ba6122c and fixed in 6.12.64 with commit 4701493ba37654b3c38b526f6591cf0b02aa172f
	Issue introduced in 5.3 with commit 26a14267aff218c60b89007fdb44ca392ba6122c and fixed in 6.18.3 with commit 24a2062257bbdfc831de5ed21c27b04b5bdf2437
	Issue introduced in 5.3 with commit 26a14267aff218c60b89007fdb44ca392ba6122c and fixed in 6.19-rc1 with commit 944edca81e7aea15f83cf9a13a6ab67f711e8abd

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-2025-68804
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/platform/chrome/cros_ec_ishtp.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/8dc1f5a85286290dbf04dd5951d020570f49779b
	https://git.kernel.org/stable/c/393b8f9bedc7806acb9c47cefdbdb223b4b6164b
	https://git.kernel.org/stable/c/4701493ba37654b3c38b526f6591cf0b02aa172f
	https://git.kernel.org/stable/c/24a2062257bbdfc831de5ed21c27b04b5bdf2437
	https://git.kernel.org/stable/c/944edca81e7aea15f83cf9a13a6ab67f711e8abd