linux-cve-announce - CVE-2025-40059: coresight: Fix incorrect handling for return value of devm

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Message-ID: <2025102816-CVE-2025-40059-b463@gregkh>
Date: Tue, 28 Oct 2025 12:48:36 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-40059: coresight: Fix incorrect handling for return value of devm_kzalloc

From: Greg Kroah-Hartman <gregkh@...nel.org>

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

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

coresight: Fix incorrect handling for return value of devm_kzalloc

The return value of devm_kzalloc could be an null pointer,
use "!desc.pdata" to fix incorrect handling return value
of devm_kzalloc.

The Linux kernel CVE team has assigned CVE-2025-40059 to this issue.


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

	Issue introduced in 6.8 with commit 4277f035d227e829133df284be7e35b7236a5b0f and fixed in 6.12.53 with commit 8c4e7e646d5d9050b374baf5c6bb3a00fb79e206
	Issue introduced in 6.8 with commit 4277f035d227e829133df284be7e35b7236a5b0f and fixed in 6.17.3 with commit 9688b66d0a5e0eecf44f6286b8d9f7a161264035
	Issue introduced in 6.8 with commit 4277f035d227e829133df284be7e35b7236a5b0f and fixed in 6.18-rc1 with commit 70714eb7243eaf333d23501d4c7bdd9daf011c01

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-2025-40059
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/hwtracing/coresight/coresight-trbe.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/8c4e7e646d5d9050b374baf5c6bb3a00fb79e206
	https://git.kernel.org/stable/c/9688b66d0a5e0eecf44f6286b8d9f7a161264035
	https://git.kernel.org/stable/c/70714eb7243eaf333d23501d4c7bdd9daf011c01