CVE-2026-53019: clk: spacemit: ccu_mix: fix inverted condition in ccu_mix_trigger_fc()

CVE-2026-53019: clk: spacemit: ccu_mix: fix inverted condition in ccu_mix_trigger_fc()

[Greg Kroah-Hartman]

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

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

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

clk: spacemit: ccu_mix: fix inverted condition in ccu_mix_trigger_fc()

Fix inverted condition that skips frequency change trigger,
causing kernel panics during cpufreq scaling.

The Linux kernel CVE team has assigned CVE-2026-53019 to this issue.


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

	Issue introduced in 6.16 with commit 1b72c59db0add8e47fa116b21f78ed0b09a264f3 and fixed in 6.18.33 with commit da99d0302d3ccccfb13c69e663bf8eae698b9562
	Issue introduced in 6.16 with commit 1b72c59db0add8e47fa116b21f78ed0b09a264f3 and fixed in 7.0.10 with commit 16dfbc4e95c46dd9c79cb8d550c7f267d4a79b91
	Issue introduced in 6.16 with commit 1b72c59db0add8e47fa116b21f78ed0b09a264f3 and fixed in 7.1 with commit 54e97360b44bed6b4399dd3be3d65f392df940fa

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-2026-53019
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/clk/spacemit/ccu_mix.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/da99d0302d3ccccfb13c69e663bf8eae698b9562
	https://git.kernel.org/stable/c/16dfbc4e95c46dd9c79cb8d550c7f267d4a79b91
	https://git.kernel.org/stable/c/54e97360b44bed6b4399dd3be3d65f392df940fa