CVE-2026-43357: iio: gyro: mpu3050-core: fix pm_runtime error handling

CVE-2026-43357: iio: gyro: mpu3050-core: fix pm_runtime error handling

[Greg Kroah-Hartman]

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

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

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

iio: gyro: mpu3050-core: fix pm_runtime error handling

The return value of pm_runtime_get_sync() is not checked, allowing
the driver to access hardware that may fail to resume. The device
usage count is also unconditionally incremented. Use
pm_runtime_resume_and_get() which propagates errors and avoids
incrementing the usage count on failure.

In preenable, add pm_runtime_put_autosuspend() on set_8khz_samplerate()
failure since postdisable does not run when preenable fails.

The Linux kernel CVE team has assigned CVE-2026-43357 to this issue.


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

	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 5.10.253 with commit 935f57dd43492240e1ca220dd065d624efece6be
	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 5.15.203 with commit 8544c488e50206f00630a8bbba43d2c8bd290345
	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 6.1.167 with commit 35f54e7bcb1eccdc6e5bff06580eeef2e0ff3677
	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 6.6.130 with commit 2a86a396aa001a9f9ba2d37dda36573a76f17c90
	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 6.12.78 with commit 66c0d1d600e7be034959cf49edab104cb5a39258
	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 6.18.19 with commit 42685cf96e28262e0b84d74447f3d99f3f6a72e0
	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 6.19.9 with commit 7a3dec5b265cf87678b10c98a72a435a8e769bb7
	Issue introduced in 4.10 with commit 3904b28efb2c780c23dcddfb87e07fe0230661e5 and fixed in 7.0 with commit acc3949aab3e8094641a9c7c2768de1958c88378

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-2026-43357
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/gyro/mpu3050-core.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/935f57dd43492240e1ca220dd065d624efece6be
	https://git.kernel.org/stable/c/8544c488e50206f00630a8bbba43d2c8bd290345
	https://git.kernel.org/stable/c/35f54e7bcb1eccdc6e5bff06580eeef2e0ff3677
	https://git.kernel.org/stable/c/2a86a396aa001a9f9ba2d37dda36573a76f17c90
	https://git.kernel.org/stable/c/66c0d1d600e7be034959cf49edab104cb5a39258
	https://git.kernel.org/stable/c/42685cf96e28262e0b84d74447f3d99f3f6a72e0
	https://git.kernel.org/stable/c/7a3dec5b265cf87678b10c98a72a435a8e769bb7
	https://git.kernel.org/stable/c/acc3949aab3e8094641a9c7c2768de1958c88378