CVE-2026-72075: Input: ims-pcu - fix race condition in reset_device sysfs callback

CVE-2026-72075: Input: ims-pcu - fix race condition in reset_device sysfs callback

[Greg Kroah-Hartman]

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

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

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

Input: ims-pcu - fix race condition in reset_device sysfs callback

The ims_pcu_reset_device() sysfs callback calls ims_pcu_execute_command()
without acquiring pcu->cmd_mutex. This can lead to data races and
corruption of the shared command buffer if triggered concurrently with
other commands.

Acquire pcu->cmd_mutex before calling ims_pcu_execute_command().

The Linux kernel CVE team has assigned CVE-2026-72075 to this issue.


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

	Issue introduced in 3.10 with commit 628329d52474323938a03826941e166bc7c8eff4 and fixed in 6.1.178 with commit 0fb84b1a3cdc74c453abc5f961c7d318c267ea4c
	Issue introduced in 3.10 with commit 628329d52474323938a03826941e166bc7c8eff4 and fixed in 6.6.145 with commit 129187ec3f868829f61f6f07381ca72fe642d0b7
	Issue introduced in 3.10 with commit 628329d52474323938a03826941e166bc7c8eff4 and fixed in 6.12.97 with commit 54c2237fc69541c75fe4cd321622ebb8ecc3587f
	Issue introduced in 3.10 with commit 628329d52474323938a03826941e166bc7c8eff4 and fixed in 6.18.40 with commit f516cba88bf952d847e5c96d0e87f17eaae7ee6f
	Issue introduced in 3.10 with commit 628329d52474323938a03826941e166bc7c8eff4 and fixed in 7.1.5 with commit 025955847e1500ced4719ac178beff6a3b2f0e3c
	Issue introduced in 3.10 with commit 628329d52474323938a03826941e166bc7c8eff4 and fixed in 7.2-rc1 with commit 411b8c4b274737c3bf08e1e025801161603cfffc

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-2026-72075
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/input/misc/ims-pcu.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/0fb84b1a3cdc74c453abc5f961c7d318c267ea4c
	https://git.kernel.org/stable/c/129187ec3f868829f61f6f07381ca72fe642d0b7
	https://git.kernel.org/stable/c/54c2237fc69541c75fe4cd321622ebb8ecc3587f
	https://git.kernel.org/stable/c/f516cba88bf952d847e5c96d0e87f17eaae7ee6f
	https://git.kernel.org/stable/c/025955847e1500ced4719ac178beff6a3b2f0e3c
	https://git.kernel.org/stable/c/411b8c4b274737c3bf08e1e025801161603cfffc