linux-cve-announce - CVE-2024-53159: hwmon: (nct6775-core) Fix overflows seen when writing limit attributes

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Message-ID: <2024122430-CVE-2024-53159-f910@gregkh>
Date: Tue, 24 Dec 2024 12:29:39 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53159: hwmon: (nct6775-core) Fix overflows seen when writing limit attributes

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

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

hwmon: (nct6775-core) Fix overflows seen when writing limit attributes

DIV_ROUND_CLOSEST() after kstrtoul() results in an overflow if a large
number such as 18446744073709551615 is provided by the user.
Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations.

The Linux kernel CVE team has assigned CVE-2024-53159 to this issue.


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

	Issue introduced in 5.19 with commit c3963bc0a0cf9ecb205a9d4976eb92b6df2fa3fd and fixed in 6.1.120 with commit ae703f8ff083c5267af30d6c8cf096d562623b3b
	Issue introduced in 5.19 with commit c3963bc0a0cf9ecb205a9d4976eb92b6df2fa3fd and fixed in 6.6.64 with commit 685c10269c41d23d7a2b85d3fd6b6345390c8746
	Issue introduced in 5.19 with commit c3963bc0a0cf9ecb205a9d4976eb92b6df2fa3fd and fixed in 6.11.11 with commit a4712e4485f5c388bbe0d0e8f52978241ab34a29
	Issue introduced in 5.19 with commit c3963bc0a0cf9ecb205a9d4976eb92b6df2fa3fd and fixed in 6.12.2 with commit dfa8bedfffcae87976b34a45a724deb9c3a0a88e
	Issue introduced in 5.19 with commit c3963bc0a0cf9ecb205a9d4976eb92b6df2fa3fd and fixed in 6.13-rc1 with commit 57ee12b6c514146c19b6a159013b48727a012960

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-2024-53159
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/hwmon/nct6775-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/ae703f8ff083c5267af30d6c8cf096d562623b3b
	https://git.kernel.org/stable/c/685c10269c41d23d7a2b85d3fd6b6345390c8746
	https://git.kernel.org/stable/c/a4712e4485f5c388bbe0d0e8f52978241ab34a29
	https://git.kernel.org/stable/c/dfa8bedfffcae87976b34a45a724deb9c3a0a88e
	https://git.kernel.org/stable/c/57ee12b6c514146c19b6a159013b48727a012960