linux-cve-announce - CVE-2025-68755: staging: most: remove broken i2c driver

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Message-ID: <2026010549-CVE-2025-68755-b588@gregkh>
Date: Mon,  5 Jan 2026 10:32:51 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-68755: staging: most: remove broken i2c driver

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

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

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

staging: most: remove broken i2c driver

The MOST I2C driver has been completely broken for five years without
anyone noticing so remove the driver from staging.

Specifically, commit 723de0f9171e ("staging: most: remove device from
interface structure") started requiring drivers to set the interface
device pointer before registration, but the I2C driver was never updated
which results in a NULL pointer dereference if anyone ever tries to
probe it.

The Linux kernel CVE team has assigned CVE-2025-68755 to this issue.


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

	Issue introduced in 5.6 with commit 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c and fixed in 6.17.13 with commit 6059a66dba7f26b21852831432e17075f1a1c783
	Issue introduced in 5.6 with commit 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c and fixed in 6.18.2 with commit e463548fd80e779efea1cb2d3049b8a7231e6925
	Issue introduced in 5.6 with commit 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c and fixed in 6.19-rc1 with commit 495df2da6944477d282d5cc0c13174d06e25b310

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-2025-68755
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/staging/most/Kconfig
	drivers/staging/most/Makefile
	drivers/staging/most/i2c/Kconfig
	drivers/staging/most/i2c/Makefile
	drivers/staging/most/i2c/i2c.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/6059a66dba7f26b21852831432e17075f1a1c783
	https://git.kernel.org/stable/c/e463548fd80e779efea1cb2d3049b8a7231e6925
	https://git.kernel.org/stable/c/495df2da6944477d282d5cc0c13174d06e25b310