linux-cve-announce - CVE-2026-23030: phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy

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Message-ID: <2026013120-CVE-2026-23030-9cb8@gregkh>
Date: Sat, 31 Jan 2026 12:44:30 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2026-23030: phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()

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

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

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

phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()

The for_each_available_child_of_node() calls of_node_put() to
release child_np in each success loop. After breaking from the
loop with the child_np has been released, the code will jump to
the put_child label and will call the of_node_put() again if the
devm_request_threaded_irq() fails. These cause a double free bug.

Fix by returning directly to avoid the duplicate of_node_put().

The Linux kernel CVE team has assigned CVE-2026-23030 to this issue.


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

	Issue introduced in 5.17 with commit ed2b5a8e6b98d042b323afbe177a5dc618921b31 and fixed in 6.6.122 with commit ebae26dd15140b840cf65be5e1c0daee949ba70b
	Issue introduced in 5.17 with commit ed2b5a8e6b98d042b323afbe177a5dc618921b31 and fixed in 6.12.67 with commit 027d42b97e6eb827c3438ebc09bab7efaee9270d
	Issue introduced in 5.17 with commit ed2b5a8e6b98d042b323afbe177a5dc618921b31 and fixed in 6.18.7 with commit efe92ee7a111fe0f4d75f3ed6b7e3f86322279d5
	Issue introduced in 5.17 with commit ed2b5a8e6b98d042b323afbe177a5dc618921b31 and fixed in 6.19-rc6 with commit e07dea3de508cd6950c937cec42de7603190e1ca

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-2026-23030
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/phy/rockchip/phy-rockchip-inno-usb2.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/ebae26dd15140b840cf65be5e1c0daee949ba70b
	https://git.kernel.org/stable/c/027d42b97e6eb827c3438ebc09bab7efaee9270d
	https://git.kernel.org/stable/c/efe92ee7a111fe0f4d75f3ed6b7e3f86322279d5
	https://git.kernel.org/stable/c/e07dea3de508cd6950c937cec42de7603190e1ca