linux-cve-announce - CVE-2024-53062: media: mgb4: protect driver against spectre

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Message-ID: <2024111931-CVE-2024-53062-c9f7@gregkh>
Date: Tue, 19 Nov 2024 18:22:33 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53062: media: mgb4: protect driver against spectre

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

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

media: mgb4: protect driver against spectre

Frequency range is set from sysfs via frequency_range_store(),
being vulnerable to spectre, as reported by smatch:

	drivers/media/pci/mgb4/mgb4_cmt.c:231 mgb4_cmt_set_vin_freq_range() warn: potential spectre issue 'cmt_vals_in' [r]
	drivers/media/pci/mgb4/mgb4_cmt.c:238 mgb4_cmt_set_vin_freq_range() warn: possible spectre second half.  'reg_set'

Fix it.

The Linux kernel CVE team has assigned CVE-2024-53062 to this issue.


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

	Issue introduced in 6.7 with commit 0ab13674a9bd and fixed in 6.11.8 with commit e0bc90742bbd
	Issue introduced in 6.7 with commit 0ab13674a9bd and fixed in 6.12 with commit 2aee207e5b3c

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-2024-53062
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/media/pci/mgb4/mgb4_cmt.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/e0bc90742bbd6eb9c63e6c22f8f6e10be7b1e225
	https://git.kernel.org/stable/c/2aee207e5b3c94ef859316008119ea06d6798d49