CVE-2026-72009: pmdomain: imx93-blk-ctrl: Extract PHY as shared domain for DSI/CSI

From: Greg Kroah-Hartman <[email protected]>

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

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

pmdomain: imx93-blk-ctrl: Extract PHY as shared domain for DSI/CSI

The MIPI DSI and CSI domains share control bits for clock and reset, which
can lead to incorrect behavior if one domain disables the shared resource
while the other is still active.

To fix the issue, introduce a shared MIPI PHY power domain to own the
common resources and make DSI and CSI its subdomains. This ensures the
shared bits are properly managed and not disabled while still in use.

The Linux kernel CVE team has assigned CVE-2026-72009 to this issue.


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

	Issue introduced in 6.1 with commit e9aa77d413c903ba4cf7da3fe0b419cae5b97a81 and fixed in 6.18.42 with commit 4fd5b33faf092ef2d09f730a7d9e49f9e976ac67
	Issue introduced in 6.1 with commit e9aa77d413c903ba4cf7da3fe0b419cae5b97a81 and fixed in 7.1.5 with commit 4ba6d7166750d0b810c6cfc0b1df7585f513b48c
	Issue introduced in 6.1 with commit e9aa77d413c903ba4cf7da3fe0b419cae5b97a81 and fixed in 7.2-rc4 with commit 99611233f8cda833169fa6487d5dacdf189e5cb0

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-2026-72009
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/pmdomain/imx/imx93-blk-ctrl.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/4fd5b33faf092ef2d09f730a7d9e49f9e976ac67
	https://git.kernel.org/stable/c/4ba6d7166750d0b810c6cfc0b1df7585f513b48c
	https://git.kernel.org/stable/c/99611233f8cda833169fa6487d5dacdf189e5cb0