CVE-2026-68219: media: nxp: imx8-isi: Fix potential out-of-bounds issues

CVE-2026-68219: media: nxp: imx8-isi: Fix potential out-of-bounds issues

[Greg Kroah-Hartman]

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

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

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

media: nxp: imx8-isi: Fix potential out-of-bounds issues

The maximum downscaling factor supported by ISI can be up to 16. Add
minimum value constraint before applying the setting to hardware.
Otherwise, the process will not respond even when Ctrl+C is executed.

The Linux kernel CVE team has assigned CVE-2026-68219 to this issue.


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

	Issue introduced in 6.4 with commit cf21f328fcafacf4f96e7a30ef9dceede1076378 and fixed in 6.6.148 with commit 690cdda752f3dc6b7a8b2d4a243e0207b66a1f37
	Issue introduced in 6.4 with commit cf21f328fcafacf4f96e7a30ef9dceede1076378 and fixed in 6.12.101 with commit ba7e1b06cbdad3b7c3314390cca22aff42f655d4
	Issue introduced in 6.4 with commit cf21f328fcafacf4f96e7a30ef9dceede1076378 and fixed in 6.18.42 with commit 28ae75dba701d7aa69a36802c398582933d3e0e6
	Issue introduced in 6.4 with commit cf21f328fcafacf4f96e7a30ef9dceede1076378 and fixed in 7.1.6 with commit 75cdfaa7c908ca06d564170da9c80fb579f149a5
	Issue introduced in 6.4 with commit cf21f328fcafacf4f96e7a30ef9dceede1076378 and fixed in 7.2-rc1 with commit 57a7ec5c9f38ce6c4d6209c4b75c8e57e1fea6cf

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-2026-68219
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/media/platform/nxp/imx8-isi/imx8-isi-core.h
	drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c
	drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.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/690cdda752f3dc6b7a8b2d4a243e0207b66a1f37
	https://git.kernel.org/stable/c/ba7e1b06cbdad3b7c3314390cca22aff42f655d4
	https://git.kernel.org/stable/c/28ae75dba701d7aa69a36802c398582933d3e0e6
	https://git.kernel.org/stable/c/75cdfaa7c908ca06d564170da9c80fb579f149a5
	https://git.kernel.org/stable/c/57a7ec5c9f38ce6c4d6209c4b75c8e57e1fea6cf