linux-cve-announce - CVE-2022-50708: HSI: ssi_protocol: fix potential resource leak in ssip_pn

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Message-ID: <2025122420-CVE-2022-50708-dfe3@gregkh>
Date: Wed, 24 Dec 2025 11:56:25 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50708: HSI: ssi_protocol: fix potential resource leak in ssip_pn_open()

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

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

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

HSI: ssi_protocol: fix potential resource leak in ssip_pn_open()

ssip_pn_open() claims the HSI client's port with hsi_claim_port(). When
hsi_register_port_event() gets some error and returns a negetive value,
the HSI client's port should be released with hsi_release_port().

Fix it by calling hsi_release_port() when hsi_register_port_event() fails.

The Linux kernel CVE team has assigned CVE-2022-50708 to this issue.


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

	Fixed in 5.19.17 with commit 78b0ef14896f843c45372f9bbdb6f6070f977eaf
	Fixed in 6.0.3 with commit e78b45b3eeee1cec77c794fcbf0512537c20b1dc
	Fixed in 6.1 with commit b28dbcb379e6a7f80262c2732a57681b1ee548ca

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-2022-50708
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/hsi/clients/ssi_protocol.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/78b0ef14896f843c45372f9bbdb6f6070f977eaf
	https://git.kernel.org/stable/c/e78b45b3eeee1cec77c794fcbf0512537c20b1dc
	https://git.kernel.org/stable/c/b28dbcb379e6a7f80262c2732a57681b1ee548ca