linux-cve-announce - CVE-2025-39690: iio: accel: sca3300: fix uninitialized iio scan data

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Message-ID: <2025090546-CVE-2025-39690-a303@gregkh>
Date: Fri,  5 Sep 2025 19:21:03 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-39690: iio: accel: sca3300: fix uninitialized iio scan data

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

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

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

iio: accel: sca3300: fix uninitialized iio scan data

Fix potential leak of uninitialized stack data to userspace by ensuring
that the `channels` array is zeroed before use.

The Linux kernel CVE team has assigned CVE-2025-39690 to this issue.


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

	Issue introduced in 6.16 with commit edeb67fbbf4b59a025a27891b92a9fc07e77d2f2 and fixed in 6.16.4 with commit c88c04adb8611e436e1e773fd5db3f8d7397d089
	Issue introduced in 6.16 with commit edeb67fbbf4b59a025a27891b92a9fc07e77d2f2 and fixed in 6.17-rc3 with commit 4e5b705cc6147f0b9173c6219079f41416bdd3c0

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-2025-39690
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/accel/sca3300.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/c88c04adb8611e436e1e773fd5db3f8d7397d089
	https://git.kernel.org/stable/c/4e5b705cc6147f0b9173c6219079f41416bdd3c0