linux-cve-announce - CVE-2023-53743: PCI: Free released resource after coalescing

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Message-ID: <2025120840-CVE-2023-53743-5da6@gregkh>
Date: Mon,  8 Dec 2025 10:19:42 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53743: PCI: Free released resource after coalescing

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

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

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

PCI: Free released resource after coalescing

release_resource() doesn't actually free the resource or resource list
entry so free the resource list entry to avoid a leak.

The Linux kernel CVE team has assigned CVE-2023-53743 to this issue.


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

	Issue introduced in 6.1.40 with commit 465c195e86f3d0ffd2e250c4b78a5a1f11cc1b0a and fixed in 6.1.53 with commit 4443f3695d581ad1a55f2ef59259dcd0c52402b3
	Issue introduced in 6.4.5 with commit b9bd8e34ec97615db4b64e043adf0cd643b16ed4 and fixed in 6.4.16 with commit a076e73dd6e619729e1af8d0d802fe52ac5eb2b3
	Issue introduced in 6.5 with commit e54223275ba1bc6f704a6bab015fcd2ae4f72572 and fixed in 6.5.3 with commit a08713b9d9031683b83b3ecf12bad40a1ca35211
	Issue introduced in 6.5 with commit e54223275ba1bc6f704a6bab015fcd2ae4f72572 and fixed in 6.6 with commit 8ec9c1d5d0a5a4744516adb483b97a238892f9d5
	Issue introduced in 5.15.181 with commit 26277a4250207e630c9a11f4ead4ef6e8441bf1f

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-2023-53743
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/probe.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/4443f3695d581ad1a55f2ef59259dcd0c52402b3
	https://git.kernel.org/stable/c/a076e73dd6e619729e1af8d0d802fe52ac5eb2b3
	https://git.kernel.org/stable/c/a08713b9d9031683b83b3ecf12bad40a1ca35211
	https://git.kernel.org/stable/c/8ec9c1d5d0a5a4744516adb483b97a238892f9d5