linux-cve-announce - CVE-2024-57908: iio: imu: kmx61: fix information leak in triggered buffer

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Message-ID: <2025011938-CVE-2024-57908-654f@gregkh>
Date: Sun, 19 Jan 2025 12:52:39 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-57908: iio: imu: kmx61: fix information leak in triggered buffer

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

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

iio: imu: kmx61: fix information leak in triggered buffer

The 'buffer' local array is used to push data to user space from a
triggered buffer, but it does not set values for inactive channels, as
it only uses iio_for_each_active_channel() to assign new values.

Initialize the array to zero before using it to avoid pushing
uninitialized information to userspace.

The Linux kernel CVE team has assigned CVE-2024-57908 to this issue.


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

	Issue introduced in 4.0 with commit c3a23ecc0901f624b681bbfbc4829766c5aa3070 and fixed in 6.1.125 with commit 6985ba4467e4b15b809043fa7740d1fb23a1897b
	Issue introduced in 4.0 with commit c3a23ecc0901f624b681bbfbc4829766c5aa3070 and fixed in 6.6.72 with commit cde312e257b59ecaa0fad3af9ec7e2370bb24639
	Issue introduced in 4.0 with commit c3a23ecc0901f624b681bbfbc4829766c5aa3070 and fixed in 6.12.10 with commit 565814cbbaa674d2901428796801de49a611e59d
	Issue introduced in 4.0 with commit c3a23ecc0901f624b681bbfbc4829766c5aa3070 and fixed in 6.13-rc7 with commit 6ae053113f6a226a2303caa4936a4c37f3bfff7b

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-2024-57908
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/imu/kmx61.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/6985ba4467e4b15b809043fa7740d1fb23a1897b
	https://git.kernel.org/stable/c/cde312e257b59ecaa0fad3af9ec7e2370bb24639
	https://git.kernel.org/stable/c/565814cbbaa674d2901428796801de49a611e59d
	https://git.kernel.org/stable/c/6ae053113f6a226a2303caa4936a4c37f3bfff7b