linux-cve-announce - CVE-2024-43849: soc: qcom: pdr: protect locator

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Message-ID: <2024081732-CVE-2024-43849-fef0@gregkh>
Date: Sat, 17 Aug 2024 11:22:53 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-43849: soc: qcom: pdr: protect locator_addr with the main mutex

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

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

soc: qcom: pdr: protect locator_addr with the main mutex

If the service locator server is restarted fast enough, the PDR can
rewrite locator_addr fields concurrently. Protect them by placing
modification of those fields under the main pdr->lock.

The Linux kernel CVE team has assigned CVE-2024-43849 to this issue.


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

	Issue introduced in 5.7 with commit fbe639b44a82 and fixed in 6.1.103 with commit 475a77fb3f0e
	Issue introduced in 5.7 with commit fbe639b44a82 and fixed in 6.6.44 with commit 3e815626d73e
	Issue introduced in 5.7 with commit fbe639b44a82 and fixed in 6.10.3 with commit 8543269567e2
	Issue introduced in 5.7 with commit fbe639b44a82 and fixed in 6.11-rc1 with commit 107924c14e3d

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-2024-43849
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/soc/qcom/pdr_interface.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/475a77fb3f0e1d527f56c60b79f5879661df5b80
	https://git.kernel.org/stable/c/3e815626d73e05152a8142f6e44aecc4133e6e08
	https://git.kernel.org/stable/c/8543269567e2fb3d976a8255c5e348aed14f98bc
	https://git.kernel.org/stable/c/107924c14e3ddd85119ca43c26a4ee1056fa9b84