CVE-2026-43355: iio: light: bh1780: fix PM runtime leak on error path

CVE-2026-43355: iio: light: bh1780: fix PM runtime leak on error path

[Greg Kroah-Hartman]

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

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

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

iio: light: bh1780: fix PM runtime leak on error path

Move pm_runtime_put_autosuspend() before the error check to ensure
the PM runtime reference count is always decremented after
pm_runtime_get_sync(), regardless of whether the read operation
succeeds or fails.

The Linux kernel CVE team has assigned CVE-2026-43355 to this issue.


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

	Issue introduced in 4.7 with commit 1f0477f18306c018a954e4f333690a9d0f7efc76 and fixed in 5.10.253 with commit 1eb3af4f59e09323788860a9155e9766b12891e5
	Issue introduced in 4.7 with commit 1f0477f18306c018a954e4f333690a9d0f7efc76 and fixed in 6.1.167 with commit 424bf90e87134effe4bd932608a15286493b11ab
	Issue introduced in 4.7 with commit 1f0477f18306c018a954e4f333690a9d0f7efc76 and fixed in 6.6.130 with commit fc77e0a5600e620a2ae51ec78933162fb217b20b
	Issue introduced in 4.7 with commit 1f0477f18306c018a954e4f333690a9d0f7efc76 and fixed in 6.18.19 with commit aae572ddc28578af476cce7da3faec0395ef0bf0
	Issue introduced in 4.7 with commit 1f0477f18306c018a954e4f333690a9d0f7efc76 and fixed in 6.19.9 with commit 33661bfc85c14836bfef4425a74b0ca2df4bb5ad
	Issue introduced in 4.7 with commit 1f0477f18306c018a954e4f333690a9d0f7efc76 and fixed in 7.0 with commit dd72e6c3cdea05cad24e99710939086f7a113fb5

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-2026-43355
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/iio/light/bh1780.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/1eb3af4f59e09323788860a9155e9766b12891e5
	https://git.kernel.org/stable/c/424bf90e87134effe4bd932608a15286493b11ab
	https://git.kernel.org/stable/c/fc77e0a5600e620a2ae51ec78933162fb217b20b
	https://git.kernel.org/stable/c/aae572ddc28578af476cce7da3faec0395ef0bf0
	https://git.kernel.org/stable/c/33661bfc85c14836bfef4425a74b0ca2df4bb5ad
	https://git.kernel.org/stable/c/dd72e6c3cdea05cad24e99710939086f7a113fb5