linux-cve-announce - CVE-2024-53069: firmware: qcom: scm: fix a NULL-pointer dereference

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Message-ID: <2024111933-CVE-2024-53069-2786@gregkh>
Date: Tue, 19 Nov 2024 18:22:40 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53069: firmware: qcom: scm: fix a NULL-pointer dereference

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

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

firmware: qcom: scm: fix a NULL-pointer dereference

Some SCM calls can be invoked with __scm being NULL (the driver may not
have been and will not be probed as there's no SCM entry in device-tree).
Make sure we don't dereference a NULL pointer.

The Linux kernel CVE team has assigned CVE-2024-53069 to this issue.


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

	Issue introduced in 6.11 with commit 449d0d84bcd8 and fixed in 6.11.8 with commit 3d36e2b1d803
	Issue introduced in 6.11 with commit 449d0d84bcd8 and fixed in 6.12 with commit ca61d6836e6f

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-2024-53069
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/firmware/qcom/qcom_scm.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/3d36e2b1d803f0d1cc674115d295a8f20ddb9268
	https://git.kernel.org/stable/c/ca61d6836e6f4442a77762e1074d2706a2a6e578