linux-cve-announce - CVE-2022-50190: spi: Fix simplification of devm_spi_register

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: <2025061836-CVE-2022-50190-5833@gregkh>
Date: Wed, 18 Jun 2025 13:04:15 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50190: spi: Fix simplification of devm_spi_register_controller

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

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

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

spi: Fix simplification of devm_spi_register_controller

This reverts commit 59ebbe40fb51 ("spi: simplify
devm_spi_register_controller").

If devm_add_action() fails in devm_add_action_or_reset(),
devm_spi_unregister() will be called, it decreases the
refcount of 'ctlr->dev' to 0, then it will cause uaf in
the drivers that calling spi_put_controller() in error path.

The Linux kernel CVE team has assigned CVE-2022-50190 to this issue.


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

	Issue introduced in 5.13 with commit 59ebbe40fb51e307032ae7f63b2749fad2d4635a and fixed in 5.15.61 with commit 445fb9c19cf45bd9472fd9babaa31c5e6c7d2720
	Issue introduced in 5.13 with commit 59ebbe40fb51e307032ae7f63b2749fad2d4635a and fixed in 5.18.18 with commit 34bab623ebfc08398499e463396b81abb4abe01e
	Issue introduced in 5.13 with commit 59ebbe40fb51e307032ae7f63b2749fad2d4635a and fixed in 5.19.2 with commit 3c6bd448442b6c3f6843ac70d57201a13478dd47
	Issue introduced in 5.13 with commit 59ebbe40fb51e307032ae7f63b2749fad2d4635a and fixed in 6.0 with commit 43cc5a0afe4184a7fafe1eba32b5a11bb69c9ce0

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-2022-50190
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/spi/spi.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/445fb9c19cf45bd9472fd9babaa31c5e6c7d2720
	https://git.kernel.org/stable/c/34bab623ebfc08398499e463396b81abb4abe01e
	https://git.kernel.org/stable/c/3c6bd448442b6c3f6843ac70d57201a13478dd47
	https://git.kernel.org/stable/c/43cc5a0afe4184a7fafe1eba32b5a11bb69c9ce0