linux-cve-announce - CVE-2023-53993: PCI/DOE: Fix memory leak with CONFIG_DEBUG

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Message-ID: <2025122424-CVE-2023-53993-7ec2@gregkh>
Date: Wed, 24 Dec 2025 11:56:37 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53993: PCI/DOE: Fix memory leak with CONFIG_DEBUG_OBJECTS=y

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

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

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

PCI/DOE: Fix memory leak with CONFIG_DEBUG_OBJECTS=y

After a pci_doe_task completes, its work_struct needs to be destroyed
to avoid a memory leak with CONFIG_DEBUG_OBJECTS=y.

The Linux kernel CVE team has assigned CVE-2023-53993 to this issue.


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

	Issue introduced in 6.0 with commit 9d24322e887b6a3d3f9f9c3e76937a646102c8c1 and fixed in 6.1.24 with commit 2a0e0f4773fe8032fb17e56f897bee32ce3cdc2b
	Issue introduced in 6.0 with commit 9d24322e887b6a3d3f9f9c3e76937a646102c8c1 and fixed in 6.2.11 with commit 95628b830952943631d3d74f73f431f501c5d6f5
	Issue introduced in 6.0 with commit 9d24322e887b6a3d3f9f9c3e76937a646102c8c1 and fixed in 6.3 with commit abf04be0e7071f2bcd39bf97ba407e7d4439785e

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-2023-53993
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/pci/doe.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/2a0e0f4773fe8032fb17e56f897bee32ce3cdc2b
	https://git.kernel.org/stable/c/95628b830952943631d3d74f73f431f501c5d6f5
	https://git.kernel.org/stable/c/abf04be0e7071f2bcd39bf97ba407e7d4439785e