linux-cve-announce - CVE-2022-50132: usb: cdns3: change place of 'priv_ep' assignment in cdns3_gadget_ep_dequeue(), cdns3_gadget_ep

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025061815-CVE-2022-50132-8e57@gregkh>
Date: Wed, 18 Jun 2025 13:03:17 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50132: usb: cdns3: change place of 'priv_ep' assignment in cdns3_gadget_ep_dequeue(), cdns3_gadget_ep_enable()

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

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

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

usb: cdns3: change place of 'priv_ep' assignment in cdns3_gadget_ep_dequeue(), cdns3_gadget_ep_enable()

If 'ep' is NULL, result of ep_to_cdns3_ep(ep) is invalid pointer
and its dereference with priv_ep->cdns3_dev may cause panic.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

The Linux kernel CVE team has assigned CVE-2022-50132 to this issue.


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

	Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 5.10.137 with commit 7af83bb516d7aa4f96835288e4aeda21d7aa2a17
	Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 5.15.61 with commit bfa0201468587072454dba7933e4a4a7be44467a
	Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 5.18.18 with commit d342203df9f2d0851b4acd9ed577d73d10eade77
	Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 5.19.2 with commit eb82c0382285ee17a9966aaab27b8becb08eb1ac
	Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 6.0 with commit c3ffc9c4ca44bfe9562166793d133e1fb0630ea6

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-2022-50132
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/usb/cdns3/cdns3-gadget.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/7af83bb516d7aa4f96835288e4aeda21d7aa2a17
	https://git.kernel.org/stable/c/bfa0201468587072454dba7933e4a4a7be44467a
	https://git.kernel.org/stable/c/d342203df9f2d0851b4acd9ed577d73d10eade77
	https://git.kernel.org/stable/c/eb82c0382285ee17a9966aaab27b8becb08eb1ac
	https://git.kernel.org/stable/c/c3ffc9c4ca44bfe9562166793d133e1fb0630ea6