linux-cve-announce - CVE-2024-57904: iio: adc: at91: call input_free_device() on allocated iio

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Message-ID: <2025011934-CVE-2024-57904-dac5@gregkh>
Date: Sun, 19 Jan 2025 12:52:35 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-57904: iio: adc: at91: call input_free_device() on allocated iio_dev

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

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

iio: adc: at91: call input_free_device() on allocated iio_dev

Current implementation of at91_ts_register() calls input_free_deivce()
on st->ts_input, however, the err label can be reached before the
allocated iio_dev is stored to st->ts_input. Thus call
input_free_device() on input instead of st->ts_input.

The Linux kernel CVE team has assigned CVE-2024-57904 to this issue.


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

	Issue introduced in 3.16 with commit 84882b060301c35ab7e2c1ef355b0bd06b764195 and fixed in 6.1.125 with commit 25ef52f1c15db67d890b80203a911b9a57b0bf71
	Issue introduced in 3.16 with commit 84882b060301c35ab7e2c1ef355b0bd06b764195 and fixed in 6.6.72 with commit 09e067e3c83e0695d338e8a26916e3c2bc44be02
	Issue introduced in 3.16 with commit 84882b060301c35ab7e2c1ef355b0bd06b764195 and fixed in 6.12.10 with commit d115b7f3ddc03b38bb7e8754601556fe9b4fc034
	Issue introduced in 3.16 with commit 84882b060301c35ab7e2c1ef355b0bd06b764195 and fixed in 6.13-rc7 with commit de6a73bad1743e9e81ea5a24c178c67429ff510b

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-2024-57904
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/adc/at91_adc.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/25ef52f1c15db67d890b80203a911b9a57b0bf71
	https://git.kernel.org/stable/c/09e067e3c83e0695d338e8a26916e3c2bc44be02
	https://git.kernel.org/stable/c/d115b7f3ddc03b38bb7e8754601556fe9b4fc034
	https://git.kernel.org/stable/c/de6a73bad1743e9e81ea5a24c178c67429ff510b